Reproduction without fusion of two types of cells, mostly found in ALGAE; FUNGI; and PLANTS. Asexual reproduction occurs in several ways, such as budding, fission, or splitting from "parent" cells. Only few groups of ANIMALS reproduce asexually or unisexually (PARTHENOGENESIS).
A plant genus of the family RANUNCULACEAE that contains protoanemonin, anemonin, and ranunculin.
A plant genus of the family POACEAE. The seed is one of the millets used in EDIBLE GRAIN. It contains vitexin. The common name of buffelgrass is also used for CENCHRUS.
A large plant family of the order Asterales, subclass Asteridae, class Magnoliopsida. The family is also known as Compositae. Flower petals are joined near the base and stamens alternate with the corolla lobes. The common name of "daisy" refers to several genera of this family including Aster; CHRYSANTHEMUM; RUDBECKIA; TANACETUM.
A plant genus of the family ASTERACEAE that is similar to CONYZA. Members contain SESQUITERPENES.
A plant genus of the family EUPHORBIACEAE that is perennial with conspicuous, almost palmate leaves like those of RICINUS but more deeply parted into five to nine lobes. It is a source of a starch after removal of the cyanogenic glucosides. The common name of Arrowroot is also used with Maranta (MARANTACEAE). The common name of yuca is also used for YUCCA.
A plant genus of the family ROSACEAE. Members contain procyanidins and TANNINS.
A plant genus of the family BRASSICACEAE. Member species are ornamentals grown for their numerous small white, yellow, pink, or purplish flowers.
The saxifrage plant family of the order ROSALES, subclass Rosidae, class Magnoliopsida. The leaves are alternate and sometimes deeply lobed or form rosettes. The flowers have both male and female parts and 4 or 5 sepals and petals; they are usually in branched clusters. The fruit is a capsule with many seeds.
A plant genus of the family POACEAE that contains the Poa p Ia allergen and allergen C KBGP.
A plant genus of the family ASTERACEAE that has long been used in folk medicine for treating wounds.
Asexual reproduction resulting in the formation of viable seeds from FLOWERS without fertlization (i.e. use of POLLEN). Progeny plants produced from apomictic seeds are perfect clones of the parent.
The element in plants that contains the female GAMETOPHYTES.
A plant genus of the family POACEAE that is used for forage.
The process of germ cell development in plants, from the primordial PLANT GERM CELLS to the mature haploid PLANT GAMETES.
The buttercup plant family of the order Ranunculales, subclass Magnoliidae, class Magnoliopsida. The leaves are usually alternate and stalkless. The flowers usually have two to five free sepals and may be radially symmetrical or irregular.
The chromosomal constitution of a cell containing multiples of the normal number of CHROMOSOMES; includes triploidy (symbol: 3N), tetraploidy (symbol: 4N), etc.
A plant genus of the family POACEAE. The common name of buffelgrass is also used for PENNISETUM.
A plant genus of the family ASTERACEAE. Members contain chicoric and chlorogenic acids and germacrane- and eudesmane-type SESQUITERPENES.
The encapsulated embryos of flowering plants. They are used as is or for animal feed because of the high content of concentrated nutrients like starches, proteins, and fats. Rapeseed, cottonseed, and sunflower seed are also produced for the oils (fats) they yield.
The geographic designation for states bordering on or located in the Pacific Ocean. The states so designated are Alaska, California, Hawaii, Oregon, and Washington. (U.S. Geologic Survey telephone communication)
The total process by which organisms produce offspring. (Stedman, 25th ed)
The chromosomal constitution of cells, in which each type of CHROMOSOME is represented twice. Symbol: 2N or 2X.
A plant genus of the family ERICACEAE.
Complex nucleoprotein structures which contain the genomic DNA and are part of the CELL NUCLEUS of PLANTS.
A unisexual reproduction without the fusion of a male and a female gamete (FERTILIZATION). In parthenogenesis, an individual is formed from an unfertilized OVUM that did not complete MEIOSIS. Parthenogenesis occurs in nature and can be artificially induced.
A large family of narrow-leaved herbaceous grasses of the order Cyperales, subclass Commelinidae, class Liliopsida (monocotyledons). Food grains (EDIBLE GRAIN) come from members of this family. RHINITIS, ALLERGIC, SEASONAL can be induced by POLLEN of many of the grasses.
The fertilizing element of plants that contains the male GAMETOPHYTES.
The genetic process of crossbreeding between genetically dissimilar parents to produce a hybrid.
The process of cumulative change over successive generations through which organisms acquire their distinguishing morphological and physiological characteristics.
Members of the group of vascular plants which bear flowers. They are differentiated from GYMNOSPERMS by their production of seeds within a closed chamber (OVARY, PLANT). The Angiosperms division is composed of two classes, the monocotyledons (Liliopsida) and dicotyledons (Magnoliopsida). Angiosperms represent approximately 80% of all known living plants.
The degree of replication of the chromosome set in the karyotype.
Deoxyribonucleic acid that makes up the genetic material of plants.
Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action in plants.
The genetic complement of a plant (PLANTS) as represented in its DNA.
The functional hereditary units of PLANTS.
Examination of CHROMOSOMES to diagnose, classify, screen for, or manage genetic diseases and abnormalities. Following preparation of the sample, KARYOTYPING is performed and/or the specific chromosomes are analyzed.
A type of CELL NUCLEUS division, occurring during maturation of the GERM CELLS. Two successive cell nucleus divisions following a single chromosome duplication (S PHASE) result in daughter cells with half the number of CHROMOSOMES as the parent cells.
Deliberate breeding of two different individuals that results in offspring that carry part of the genetic material of each parent. The parent organisms must be genetically compatible and may be from different varieties or closely related species.
A phenotypically recognizable genetic trait which can be used to identify a genetic locus, a linkage group, or a recombination event.
Genotypic differences observed among individuals in a population.
Theoretical representations that simulate the behavior or activity of genetic processes or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.
The relationships of groups of organisms as reflected by their genetic makeup.
A mature haploid female germ cell extruded from the OVARY at OVULATION.
A region, north-central Asia, largely in Russia. It extends from the Ural Mountains to the Pacific Ocean and from the Arctic Ocean to central Kazakhstan and the borders of China and Mongolia.
Stable strontium atoms that have the same atomic number as the element strontium, but differ in the atomic weight. Sr-84, 86, 87, and 88 are the stable strontium isotopes.
A discipline concerned with studying biological phenomena in terms of the chemical and physical interactions of molecules.
Stable calcium atoms that have the same atomic number as the element calcium, but differ in atomic weight. Ca-42-44, 46, and 48 are stable calcium isotopes.
Garbage, refuse, or sludge, or other discarded materials from a wastewater treatment plant, water supply treatment plant, and air pollution control facility that include solid, semi-solid, or contained material. It does not include materials dissolved in domestic sewage, irrigation return flows, or industrial discharges.
Raw and processed or manufactured milk and milk-derived products. These are usually from cows (bovine) but are also from goats, sheep, reindeer, and water buffalo.
An element of the alkaline earth family of metals. It has the atomic symbol Sr, atomic number 38, and atomic weight 87.62.

Apomixis in hawkweed: Mendel's experimental nemesis. (1/24)

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Isolation and characterization of microsatellite loci from apomictic Hypericum perforatum (Hypericaceae). (2/24)

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Chromosome numbers and meiotic analysis in the pre-breeding of Brachiaria decumbens (Poaceae). (3/24)

A total of 44 accessions of Brachiaria decumbens were analysed for chromosome count and meiotic behaviour in order to identify potential progenitors for crosses. Among them, 15 accessions presented 2n = 18; 27 accessions, 2n = 36; and 2 accessions, 2n = 45 chromosomes. Among the diploid accessions, the rate of meiotic abnormalities was low, ranging from 0.82% to 7.93%. In the 27 tetraploid accessions, the rate of meiotic abnormalities ranged from 18.41% to 65.83%. The most common meiotic abnormalities were related to irregular chromosome segregation, but chromosome stickiness and abnormal cytokinesis were observed in low frequency. All abnormalities can compromise pollen viability by generating unbalanced gametes. Based on the chromosome number and meiotic stability, the present study indicates the apomictic tetraploid accessions that can act as male genitor to produce interspecific hybrids with B. ruziziensis or intraspecific hybrids with recently artificially tetraploidized accessions.  (+info)

Chromosomes carrying meiotic avoidance loci in three apomictic eudicot Hieracium subgenus Pilosella species share structural features with two monocot apomicts. (4/24)

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Evolution of the apomixis transmitting chromosome in Pennisetum. (5/24)

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Sexual reproduction development in apomictic Eulaliopsis binata (Poaceae). (6/24)

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Boechera, a model system for ecological genomics. (7/24)

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Density-independent mortality and increasing plant diversity are associated with differentiation of Taraxacum officinale into r- and K-strategists. (8/24)

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article{4213140, abstract = {In apomictic Boechera spp., meiotic diplospory leads to the circumvention of meiosis and the suppression of recombination to produce unreduced male and female gametes (i.e. apomeiosis). Here, we have established an early flower developmental staging system and have performed microarray-based comparative gene expression analyses of the pollen mother cell stage in seven diploid sexual and seven diploid apomictic genotypes to identify candidate factors for unreduced pollen formation. We identified a transcript unique to apomictic Boechera spp. called UPGRADE2 (BspUPG2), which is highly up-regulated in their pollen mother cells. BspUPG2 is highly conserved among apomictic Boechera spp. genotypes but has no homolog in sexual Boechera spp. or in any other taxa. BspUPG2 undergoes posttranscriptional processing but lacks a prominent open reading frame. Together with the potential of stably forming microRNA-like secondary structures, we hypothesize that BspUPG2 functions as a ...
We have compared the transcriptomic profiles of microdissected live ovules at four developmental stages between a diploid sexual and diploid apomictic Boechera. We sequenced ,2 million SuperSAGE tags and identified (1) heterochronic tags (n = 595) that demonstrated significantly different patterns of expression between sexual and apomictic ovules across all developmental stages, (2) stage-specific tags (n = 577) that were found in a single developmental stage and differentially expressed between the sexual and apomictic ovules, and (3) sex-specific (n = 237) and apomixis-specific (n = 1106) tags that were found in all four developmental stages but in only one reproductive mode. Most heterochronic and stage-specific tags were significantly downregulated during early apomictic ovule development, and 110 were associated with reproduction. By contrast, most late stage-specific tags were upregulated in the apomictic ovules, likely the result of increased gene copy number in apomictic (hexaploid) ...
For angiosperms, apomixis means asexual reproduction by seed [1]. It is strongly associated with hybridity and polyploidy, and molecular mechanisms responsible for it remain shrouded in complexity [2-4]. Apomixis involves the reprogramming of unreduced (2n) cells of the ovule, which thereafter follow a very different developmental trajectory than had the plant been sexual. Specifically, ovules of apomictic plants produce asexual totipotent cells. These form in the nucellus, chalaza or integuments, and embryos develop from them either directly (adventitious embryony) or after 2n embryo sac (ES) formation (gametophytic apomixis). Apomictic (2n) ES usually resemble sexual ES, but embryony in them occurs parthenogenetically and often precociously. Whether in sexual plants or apomicts, embryony is the result of epigenome modifications that begin as early as floral transition [5, 6].. Gametophytic apomixis is further divided into i) apospory, where the 2n aposporous ES (AES) forms from a cell of the ...
I have some D. binata seedlings coming up from a pot of S. purpurea ssp. venosa (a pleasant surprise). I was just wondering if they were one the multi
Unscramble potentillas, Unscramble letters potentillas, Point value for potentillas, Word Decoder for potentillas, Word generator using the letters potentillas, Word Solver potentillas, Possible Scrabble words with potentillas, Anagram of potentillas
62. Boechera oxylobula (Greene) W. A. Weber, Phytologia. 51: 370. 1982. Arabis oxylobula Greene, Pittonia 4: 195. 1900; A. aprica Osterhout ex A. Nelson; A. demissa Greene; A. rugocarpa Osterhout; Boechera demissa (Greene) W. A. Weber. Perennials; short- to long-lived; (cespitose); sexual; caudex usually not woody. Stems usually 3-7 per caudex branch, arising from margin of rosette near ground surface, or arising laterally proximal to sterile shoots, 0.4-2.5 dm, glabrous or pubescent proximally, trichomes simple and short-stalked, 2-rayed, 0.1-0.4 mm, glabrous distally. Basal leaves: blade linear to linear-oblanceolate, 1-2.5 mm wide, margins usually entire, rarely denticulate, often ciliate, trichomes (simple), 0.3-0.7 mm, surfaces glabrous or sparsely pubescent, trichomes short-stalked, 2- or 3-rayed, 0.1-0.4 mm. Cauline leaves: 3-12, not concealing stem; blade auricles absent, surfaces of distalmost leaves usually glabrous, rarely sparsely pubescent. Racemes 2-12-flowered, unbranched. ...
Potentilla pilosa Willd., more, Potentilla recta var. obscura L., Potentilla recta var. pilosa L., Potentilla recta var. sulphurea L., Potentilla sulphurea Lam. ...
83. Boechera quebecensis Windham & Al-Shehbaz, Harvard Pap. Bot. 12: 246. 2007. Arabis divaricarpa A. Nelson var. dechamplainii B. Boivin. Biennials or perennials; short-lived; apomictic; caudex present or absent. Stems usually 1 per caudex branch, arising from center of rosette near ground surface, 1-4.5 dm, densely pubescent proximally, trichomes sessile, 2-4-rayed, 0.15-0.5 mm, glabrous distally. Basal leaves: blade oblanceolate, 5-15 mm wide, margins denticulate, ciliate proximally, trichomes (simple), to 1 mm, surfaces moderately pubescent, trichomes subsessile, (2- or) 3-7-rayed, 0.1-0.3 mm. Cauline leaves: 4-15, not concealing stem; blade auricles 1-3.5 mm, surfaces of distalmost leaves glabrous. Racemes 11-41-flowered, usually unbranched. Fruiting pedicels horizontal to slightly descending, curved to straight, 3-8(-14) mm, glabrous or with some subappressed, branched trichomes. Flowers divaricate at anthesis; sepals pubescent; petals white, 6-7 × 1-2 mm, glabrous; pollen spheroid. ...
On the slopes of the Northern Rocky Mountains, the flowering mustard plant Boechera stricta is undergoing a quiet transformation - that is, evolving into a fitter species better adapted to its local environment. HudsonAlpha faculty investigator Jeremy Schmutz was part of a team led by Thomas Mitchell-Olds of Duke University who analyzed the mechanisms by which Boechera stricta living in a hybrid zone in the Northern Rocky Mountains experienced positive directional selection. Their study was published in Nature Ecology and Evolution in April 2017.. Here, in Boechera stricta we are capturing that moment of selection - the moment when the subpopulation with the inversion takes over from the pre-inversion genotype and outcompetes it, said DOE JGI Plant Program Head Jeremy Schmutz, a co-author on the study. The inversion fixes a set of alleles in the population. Here the set of fixed alleles improves survivability over the previous genotypes. Schmutz is also the co-director of the HudsonAlpha ...
Objective To study the effect of Potentilla anserina L.on apoptosis of cultured neonatal rat cardiomyocytes induced by hypoxia and its possible mechanism.Methods A model of hypoxia injury was established by using primary cultured myocytes of neonatal SD rats.Using HE staining,Hochest-PI staining and technique of transmission electron microscopy(TEM),the morphological changes of cardiac myocytes were observed.The mechanism was studied using immunohistochemical staining of P53 protein at molecular biological level.Results Compared with hypoxic model group and normal control group,the extract of Potentilla anserina L.in alcohol could significantly attenuate the injurious changes,such as swelling,fragmentation and condensation of nucleus and could downregulate the expression of P53 protein(P0.01).Conclusion Potentilla anserina L.has a notable attenuating effect on apoptosis of cardiomyocytes induced by hypoxia.This effect might be related to regulating the expression of P53 protein.
Hieracium canadense, commonly called Canadian hawkweed, Canada hawkweed, narrowleaf hawkweed, or northern hawkweed, is a plant in the genus Hieracium. Its pointed leaves have toothed margins, where the teeth can appear almost hooked. The flowers of the plant are yellow.. ...
POTENTILLA MIXED SEEDS - Plant World Seeds. A wide selection of many showy herbaceous forms in white, yellow, orange and red, e.g. Potentilla argentea, atrosanguinea, grandiflora, hyparctica, megalantha, nepalensis, rupestris nana and several more.
[ Kikuyugrass Pennisetum Clandestinum ] - Horsedvm Toxic Plants For Horses Kikuyu Grass,Pennisetum Clandestinum Hochst Ex Chiov Kikuyugrass,Factsheet Pennisetum Clandestinum
Define common dandelion. common dandelion synonyms, common dandelion pronunciation, common dandelion translation, English dictionary definition of common dandelion. Noun 1. common dandelion - Eurasian plant widely naturalized as a weed in North America; used as salad greens and to make wine Taraxacum officinale,...
The roots, leaves and flowers of the dandelion plant are a potent and healthy herbal medicine, although folks might think those yellow dots popping up in their landscape are just nuisance weeds. Not so, as reported by Reset.me, who emphasizes that the botanical name for dandelion - Taraxacum officinal - aptly describes its medicinal potential. Taraxacum translates into an inflammation curative. Officinal means that the lowly dandelion is revered as a bona fide, official medicinal plant. The use of the dandelion plant as a healing agent predates written records, but it is understood that the Greeks and the Chinese used dandelion compounds to aid in digestion, and as a liver tonic and diuretic. (RELATED: Learn more about natural remedies at Remedies.news). Traditional herbalists, both in the East and the West, have utilized the properties of the dandelion for liver support and as a blood purifier. It is this blood purifying action that intrigued Canadian researchers at the University of ...
APG IV Classification: Domain: Eukaryota • (unranked): Archaeplastida • Regnum: Plantae • Cladus: angiosperms • Cladus: eudicots • Cladus: core eudicots • Cladus: superasterids • Cladus: asterids • Cladus: euasterids II • Ordo: Asterales • Familia: Asteraceae • Subfamilia: Cichorioideae • Tribus: Cichorieae • Genus: Hieracium • Species: Hieracium lactucella Wallr. (1822) ...
While the dandelion is considered a weed by many gardeners and lawn owners, and difficult to eliminate with its long taproot, the plant has also been prized over the centuries for several culinary and medicinal uses. Dandelions are grown commercially on a small scale as a leaf vegetable. The plant can be eaten cooked or raw in various forms, such as in soup or salad. They are probably closest in character to mustard greens. Usually the young leaves and unopened buds are eaten raw in salads, while older leaves are cooked. Raw leaves have a slightly bitter taste. Dandelion salad is often accompanied with hard boiled eggs.. Dandelion flowers can be used to make dandelion wine. The recipe usually contains citrus fruit. Another recipe using the plant is dandelion flower jam. Ground roasted dandelion root can be used as a coffee substitute. Drunk before meals, it is believed to stimulate digestive functions. Sold in most health food stores, often in a mixture, it is considered an excellent cleansing ...
Dandelion - the word comes from the french dent de lion meaning tooth of a lion. Herbalists absolutely love the dandelion… unfortunately, homeowners do not! Most of us dont want them in our yards and go to great lengths to see to their complete eradication. And its a strange irony that our supermarket sells dandelion leaves (much bigger than the paltry ones growing my lawn) for $7.00 a bunch! Turns out they are a nutritional powerhouse, brimming with minerals and vitamins! Truly, one mans weed is another mans salad!. For most, the dandelion is an unwelcome invader, but as a beekeeper, I can appreciate that it was european settlers who introduced the dandelion to the midwest as food for the honey bee (as it turns out, the settlers brought the honeybees too!) Thats right… the dandelion was brought to this country, on purpose! Whether or not my family wants to eat it is one thing, but the bees love dandelions. They are one of the first and most reliable blossoms of spring and in our yard, ...
POTENTILLA RECTA WARRENII SEEDS - Plant World Seeds. This vigorous and very old favourite produces strong clumps of divided foliage, above which arise large sprays of bright canary-yellow flowers over a long period throughout spring and summer. It may self-seed when happy but never becomes a nuisance here.
http://botanicallyinclined.org/wp-content/uploads/2013/04/logo-red-new2.jpg 0 0 diversifolius http://botanicallyinclined.org/wp-content/uploads/2013/04/logo-red-new2.jpg diversifolius2015-01-31 15:27:172015-01-31 15:27:17Potentilla divina seeds ...
Botanical Name: Potentilla palustris Family: Rosaceae Genus: Comarum Species: C. palustre Kingdom: Plantae Order: Rosales Synonyms: Comarum palustre Common
In a new study published in Austral Ecology, Nicola Day and Hannah Buckley of Lincoln University have looked at the fate of three closely related invasive species over three decades. The plant species Hieracium (Hawkweed, Asteraceae) are native to Europe but are invasive in many parts of the world where they often degrade native and pastoral grasslands. In New Zealand, three species in particular, H. lepidulum, H. pilosella, and H. praealtum, were introduced accidentally in grass-seed mixtures and cause major problems in high country areas. Day and Buckley wanted to know which ecological and environmental traits explained the spread of these species, whether these traits were important at all scales and whether they were the same for all three species. To test these ideas they were able to make use of a fantastic long term study. In the mid 1980s, 124 study sites were set up in high altitude tussock grasslands in Otago and southern Canterbury. Information about the plant species found at these ...
A weed is useless and ugly. Sometimes, it even tries to look like a flower.. The Dandelion had more questions.. Who are you? How do you know such things?. The angry plant twisted her stem and shook her petals.. I am a perennial. This means that I bloom each year. Tomorrow, the gardener will water the flowers and pull out ugly weeds.. The Dandelion looked around her. The moon had begun to shine her light on the plants. They looked so pretty.. Lady Perennial, said the Dandelion respectfully. I see no weeds in this garden. Everyone is different and each plant is beautiful.. The Perennial twisted her stem again and hissed at the Dandelion.. Stupid Dandelion! You are the only horrible weed among us!. The Dandelion shivered with fear as all of the plants looked in her direction.. A Pansy spoke up.. Lady Perennial, who decides which plant is a flower and which plant is a weed?. Humans made this decision a long time ago. answered the Perennial.. The Pansy was confused. But, she looks and ...
The next time you want to add leafy greens to your menu, try dandelion leaves. Although kale has become a popular green during the past decade as an addition to many soups, salads and entrees, nutritionists have discovered that dandelions actually are higher in vitamins and nutrients.. For centuries, the dandelion root has been used for medicinal purposes, but scientists state that the entire plant is edible. Most natural food stores carry a variety of products made from dandelions, including teas, capsules or tablets, tinctures and several herbal remedies.. Dandelion leaves are excellent sources of calcium, fiber, iron, numerous vitamins, niacin, phosphorous, riboflavin, potassium, zinc, copper and manganese. In addition, they are credited for improving liver function, reducing bloating and PMS symptoms and creating healthy skin.. Many people claim that dandelion leaves have a bitter taste; nutritionists advise counteracting the bitterness by combining the leaves with other flavors.. Here are ...
Though dandelion is oft accused of weedy behavior, its medicinal and nutritive qualities make it an herbalists treasure. This volume of The Practical Herbalists Herbal Folio series delves into the many healthful uses of dandelion. Learn how dandelion helps with recovery from illnesses, such as colds, flus, and sinus infections; helps the body process hormones, making dandelion a perfect assistant for adolescence and menopause; helps improve womens fertility and aids in lactation; helps improve digestion and eliminate toxins from the body, supporting the liver and even helping heal liver diseases like Hepatitis B and C; replaces essential potassium while supporting the kidneys, encouraging healthy blood pressure and helping the body to naturally correct high blood pressure; helps ease those with incessant muscle tension due to overwork; helps reduce high cholesterol and can even ease edema.. Discover uses for dandelion that extend beyond the purely medicinal, like using dandelion to bitter ...
Hawkweed, any of the weedy plants of the genus Hieracium of the family Asteraceae, containing more than 100 species (more than 10,000 species, or microspecies, if tiny variations are considered to be separate species) native to temperate regions of the world. Mouse-ear hawkweed (H. pilosella),
Hieracium fendleri (yellow hawkweed) is a species of perennial herb in the family Asteraceae. It has a self-supporting growth form. It is native to the contiguous United States and the contiguous United States. It has simple, broad leaves. Flowers are visited by Leonards skipper. It is a photoautotroph. Individuals can grow to 0.041 m.. ...
Botanical Name: Taraxacum officinale Plant Part Extracted: Fresh root, leaf & flower 1 Contains: vegetable glycerine, distilled water & Dandelion extractives. CONTAINS NO ALCOHOL Description: We prepare our Dandelion Glycerite from fresh (undried) whole Taraxacum officinale plants (root, leaf & flower) which are Certified Organically Grown 1 on our own farm without the use of chemical fertilizers, pesticides or herbicides. To assure optimal extraction of Dandelions bioactive compounds, the plants are hand-harvested while in full flower and are then taken directly to our laboratory and promptly extracted while still fresh and succulent. Our Dandelion is never fumigated or irradiated. Caution: Keep Out of the Reach of Children
Pennisetum Rubrum PlantA beautiful exhibition of colour and texturesThe Pennisetum Rubrum Plant is a spectacular show of textures and colours to hello create unique flower displays in your garden. The scarlet- red feathered blooms and bronze foliage will create a fantastic contrast with brighter flowers in your flower beds and flower borders. The Pennisetum Rubrum Plant grows to a height of 1-1.5m (33-5) and spread of 50-60cm (20-24) meaning this stunning plant will be a huge, showstopping piece planted in decorative containers and patio pots. Every garden should make room for them!
Why are they not considered to be flowers? You have to admit that when dandelion season is in full swing, those yellow blooms are beautiful. Children enjoy picking dandelions for their mom and delight in blowing the puffy dandelions seeds into the wind. I remember that we would always make a wish before we blew them.. My first weekend of dandelion celebration was so much fun in the kitchen, creating new recipes from dandelions! All the other ingredients I use are very healthy too.. ...
A widely cultivated fern with dimorphic sterile and fertile pinnae, abundant production of vegetative bulbils, and aborted spores is described as Asplenium × lucrosum Perrie et Brownsey nothosp. nov.
With the help of dandelions, we can increase the production of an antioxidant in our liver called superoxide dismutase. It helps us prevent the radical damage on our cells as well as the DNA, so they dont age fast.. Numerous different studies claim that dandelions can have an improving effect on our liver, so waste and toxins are eliminated better and the amount of electrolytes becomes increased.. According to a study from 2017, dandelions contain polysaccharides which have a great effect on our liver.. Protected Bones. Dandelions are full of vitamin K. This is a fat-soluble vitamin which our body needs for a process called bone mineralization. Different studies prove that it is even claimed to be more effective at bone building and strengthening than calcium.. Improved Digestion. Dandelions have the ability to promote good gut bacteria and eliminate the bad ones which makes them amazing for our process of digestion. They also improve our appetite.. Our kidneys also have an improved function ...
Save 42% Natures Way - Dandelion Root 100 Capsules Dandelion Root Premium Herbal 525mg Non-GMO Dandelion (Taraxacum officinale) is a popular bitter herb used for centuries as a traditional remedy. Our Dandelion is carefully tested and produced to superior quality standards. Vegetarian. Vegetarian Capsules.
Plantes (hors orchidées),Asteraceae,Hieracium bifidum Kit., 1815,Épervière bifide, Observatoire du Patrimoine Naturel du Gard, Languedoc-Roussillon, France
This plant is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location, or click here for a composite list of all Federal and State Noxious Weeds ...
Hieracium gronovii--the USDA Plants database calls this queendevil. It grows in dry places, like the rather similar Rattlesnake Weed, Hieracium venosum. The leaves of this species are mostly basal, hairy, and plain green--lacking the purple mottling of venosum. (I have photos of leaves, but did not post them, as they are not that exciting.) Looking at the keys and, to some extent, range maps, in Radford et al.s Vascular Flora of the Carolinas, I think Ive got the right species. As noted in comments, the little syrphid fly is a Toxomerus ...
Ph.D. 2011 Speciality: Boechera systematics and Flora of the Southwestern US. Patrick is currently the curator of the NMSU Dept of Biology Herbarium (NMC). In June (2014) he will move to a full time position in conservation and land management with the Chicago Botanical Garden (but stationed in the Las Cruces, NM). ...
Description: Dandelion is up to 40 cm high plant. It grows on meadows, and also in parks and gardens. Its blossoms have bright golden colour. Use in cuisine: Young leaves can be prepared as a salad that is very good together with potatoes, but has a slightly bitter taste; dandelion can be also prepared like spinach. Health: Dandelion…
The dandelion sure gets a bad rap in suburbia. The other day I caught my neighbor using a leaf blower to blow the puff balls off the dandelions in my yard so they wouldnt blow into his perfectly groomed lawn. Lawn care companies and homeowners with green grass seem to have quite the vendetta against this weed. If they only knew how helpful this amazing plant is they wouldnt waste so much effort trying to eradicate it from their yards.. The Chinese name for dandelion is Pu Gong Ying. It is commonly called dandelion or taraxicum (Herba Taraxaci). In Chinese medicine we place this herb in the category Clear Heat, Eliminate Toxins. We use it both internally and externally. Pu Gong Ying has antibacterial properties and reduces inflammation in the skin. We use it for sores, lesions, ulcerations and red rashes on the skin. It is also great for pus-filled abscesses when combined with other herbs. It is quite helpful to relive sore throat, too. In my clinical practice, I add Pu Gong Ying to almost ...
Aceptado: 08/04/2014. INTRODUCTION. The genus Tessmannianthus Markgr. has seven species and is restricted to the Neotropical countries of Panama , Colombia , Ecuador , and Peru (Almeda 1990). It is considered to be a member of the tribe Merianieae (Renner, 1993). Species in the genus are medium to large trees reaching 40 meters tall making them amongst the largest members of Melastomataceae (Almeda 1990). Tessmannianthus flowers are also unusual in that they are extremely heterantherous, with the small set of stamens bifurcating at the apex into two distinct pores whereas the large stamens have a single pore. This extreme heteranthery is used to diagnose the genus and gives the name to the type species, T. heterostemon Markgr. (Markgraf 1927). Another less uncommon but noteworthy feature of the androecium in Tessmannianthus is that the larger series of stamens are opposite the sepals rather than the petals, as is the more frequent condition in heterantherous taxa (Almeda 1989, Mendoza-Cifuentes ...
Kirschner, J. & J. Štěpánek. 2011. Typification of Leontodon taraxacum L. (Ξ Taraxacum officinale F.H. Wigg.) and the generic name Taraxacum: a review and a new typification proposal. Taxon 60(1): 216-220. ...
Blossom Dandelion Flower Plants: 20 assigned downloads, like Dandelion Taraxacum officinale agg. grows out of paving stones from stock-photos
Use dandelion as a supplement to your dogs fresh; wholesome, nutritious diet for best effect. It might be that like me you suffer from a surplus of dandelions in your garden! But really we should welcome the much-maligned dandelion (Taraxacum officianale) both for its health properties as well as one of the first food
Low prices on Dandelion! Dandelion (Taraxacum officinale) is a popular bitter herb used for liver support, as well as an internal cleanser and diuretic. Dandelion is said to help with kidney stones, to clear up acne and prevent anemia.
Native to the sunny meadows of Japan and a large part of South East Asia, Pennisetum alopecuroides Japonicum forms a beautiful dense tuft. Buy Pennisetum alopecuroides Japonicum
NJPlantsandtrees Pennisetum Rubrum (3 Gallon Container) - Gracefully arching, wine-purple foliage topped with burgundy, soft bottlebrush plumes up to 1 long appear in midsummer. Enjoy its winter interest too--the plumes and the leaves will turn a subtle straw color after the first hard freeze. This grass will be a focal point wherever its planted. aka Pennisetum setaceum Rubrum MORE INFO
Natures Way Dandelion Root Value Size - Dandelion is a popular bitter with a long history of use as an herbal remedy. Dandelions name come
Completely customisable heart shaped Dandelion ceramic decorations from Zazzle - Select your favourite heart shaped Dandelion designs for your Christmas decorations.
Add the ingredients to the water and leave them thus for 24 hours. Then, add 2 cups of sugar, and cook for half a minute. When the mixture becomes thick and syrupy, remove from heat, and pour it into sterilized jars. Use it to treat common colds, persistent coughs, and bronchitis.. Tea Recipe. Dandelion tea is made from dried, chopped, minced, and mixed dandelion leaves. Take half a teaspoon of the mixture and add it to a glass of water to prepare your tea.. You can also mix 60 grams of this mixture with 30 grams of dried dandelion roots. Add the mixture to 2.5 ounces of water, and a bit of salt. Boil and simmer for 20 minutes. Then, strain, and drink a glass of it three times daily.. We really hope you find this article helpful and dont forget to share it with your friends and family. Thank You ...
Here, peppery-tasting dandelion greens are simply sautéed with olive oil and garlic and then tossed with balsamic vinegar plus some crisped Canadian bacon. Dandelion greens are a favorite springtime wild edible, but if you dont get them early enough, they begin to toughen. If large, store-bought dandelion greens are used, blanch them for 1 to 2 minutes in boiling water before sautéing.
Dandelions are particularly good for them, essentially theyre vitamin capsules (as most vegetables are). The chickens find them especially delectable. I like to eat them as well, but I like eggs every more than I like dandelions greens. Its also nice knowing that a garden chores is making the chicken happier and healthier, as well as making their eggs more nutritious for me and my egg customers. Do you eat dandelion greens?. ...
This plant is highly suitable for the garden on the South . Calls for a sunny, warm spot on not to poor soil and beyond the shadow zone of trees and shrubs. They can be used as a border plant, because they can be easily combined. This plant has abundant in winter protection against rain and snow. In the summer you must ensure that they do not dry out. It is not or hardly and can combine well with other plants. ...
Apomixis[edit]. Apomixis (reproduction via asexually formed seeds) is found naturally in about 2.2% of angiosperm genera.[63] ... One type of apomixis, gametophytic apomixis found in a dandelion species[64] involves formation of an unreduced embryo sac due ... "Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics". CRC Crit Rev Plant Sci. 33 ...
Apomixis Zhang, Siqi; Liang, Mei; Wang, Nan; Xu, Qiang; Deng, Xiuxin; Chai, Lijun (March 2018). "Reproduction in woody ... Nucellar embryony is a type of apomixis, where eventually nucellar embryos from the nucellus tissue of the ovule are formed, ... Koltunow, A. M. (1993-10-01). "Apomixis: Embryo Sacs and Embryos Formed without Meiosis or Fertilization in Ovules". The Plant ... Spillane, C.; Steimer, A.; Grossniklaus, U. (2001-12-01). "Apomixis in agriculture: the quest for clonal seeds". Sexual Plant ...
This is one of several types of apomixis that occur in plants. Apomixis can also happen in a seed, producing a seed that ... Some otherwise sterile plant polyploids can still reproduce vegetatively or by seed apomixis, forming clonal populations of ... Savidan, Y.H. (2000). "Apomixis: Genetics and Breeding". Plant Breeding Reviews. 18: 13-86. doi:10.1002/9780470650158.ch2. ISBN ...
Apomixis in higher plants. C. W. K. Gleerup, Lund. Ledyard Stebbins, G. (1940). "The Significance of Polyploidy in Plant ... a process known as apomixis). The collaboration between Babcock and Stebbins produced numerous papers and two monographs. The ... their interrelationships and distribution as affected by polyploidy and apomixis. In The American Species of Crepis, Babcock ...
Apomixis mainly occurs in two forms: In gametophytic apomixis, the embryo arises from an unfertilized egg within a diploid ... Apomixis in plants is the formation of a new sporophyte without fertilization. It is important in ferns and in flowering plants ... Male apomixis can occur in rare cases, such as the Saharan Cypress Cupressus dupreziana, where the genetic material of the ... Plants can engage in parthenogenesis as well through a process called apomixis. However this process is considered by many to ...
Koltunow, A. M. G.; Johnson, S. D.; Okada, T. (2011). "Apomixis in hawkweed: Mendel's experimental nemesis". Journal of ...
It is polyploid and exhibits apomixis; most all the plants are female and they reproduce asexually. This herbaceous perennial ...
Koltunow, A. M. G.; Johnson, S. D.; Okada, T. (1 March 2011). "Apomixis in hawkweed: Mendel's experimental nemesis". Journal of ... Bicknell, Ross A.; Koltunow, Anna M. (2004). "Understanding Apomixis: Recent Advances and Remaining Conundrums". The Plant Cell ...
... see Pseudogamous apomixis, below). A better term for the restrictive sense is centrogamy. Apomixis in flowering plants ( ... autonomous apomixis). Many flowering plants with pseudogamous apomixis require fertilization to produce the endosperm of the ... Pseudogamous apomixis occurs in many families. It is particularly common in Rosaceae and Poaceae, where it occurs in many ... By contrast, autonomous apomixis is the rule among the many apomictic species of Asteraceae including the common dandelion ...
The plant equivalent of parthenogenesis is apomixis. Zangerl AR, Nitao JK, Berenbaum MR (1991). "Parthenocarpic fruits in wild ... but might be able to propagate by apomixis or by vegetative means. Examples of this include many citrus varieties that undergo ...
Apomixis is the process of asexual reproduction through seed, in the absence of meiosis and fertilization, generating clonal ... Apomixis (including apospory and diplospory) is a type of reproduction that does not involve fertilization. In flowering plants ... Spillane, Charles; Curtis, Mark D; Grossniklaus, Ueli (June 2004). "Apomixis technology development-virgin births in farmers' ...
... reproduces by obligatory mitotic parthenogenesis (apomixis). Meloidogyne javanica is a nematode pathogen ...
Apomixis can apparently occur in Phytophthora, an oomycete. Oospores from an experimental cross were germinated, and some of ... The genetic composition of the offspring depends on what type of apomixis takes place. When endomitosis occurs before meiosis ... Offspring are genetically identical to the parent, indicating it reproduces by apomixis, i.e. parthenogenesis in which the eggs ... Hurtado-Gonzales, O. P.; Lamour, K. H. (2009). "Evidence for inbreeding and apomixis in close crosses ofPhytophthora capsici". ...
Hanna, W.W.; Bashaw, E.C. (1987). "Apomixis: Its Identification and Use in Plant Breeding1". Crop Sci. 27 (6): 1136-1139. doi: ... Apomixis and parthenogenesis, types of asexual reproduction, also result in true breeding, although the organisms are usually ...
Heteroploid twins and apomixis in Casuarina nana Sieb. Australian Journal of Botany 6, 204-219. doi:10.1071/BT9580204 Barlow, B ...
Gupta P, Shivanna KR, Mohan Ram HY (1996). "Apomixis and polyembryony in the guggul plant, Commiphora wightii". Ann Bot. 78: 67 ...
This grass also sometimes undergoes apomixis, reproduction without fertilization. This independence of the need for pollination ...
Isogamy Heterogamy Apomixis Beukeboom, L. and Perrin, N. (2014). The Evolution of Sex Determination. Oxford University Press, p ...
Selection of high-yielding guayule is complicated by its breeding system, which is primarily apomixis (asexual cloning via ... 1950). "On the Inheritance of Apomixis in Parthenium argentatum". Botanical Gazette. 112 (1): 96-106. doi:10.1086/335630. ISSN ...
The sweet orange reproduces asexually (apomixis through nucellar embryony); varieties of sweet orange arise through mutations. ...
The plant self-fertilizes or undergoes apomixis, without fertilization. This grass is valuable as a forage for livestock in ...
It is a widespread and well known group of over 375 species which reproduce by apomixis.[1] They are native all over the ... Apomixis: replacement of the normal sexual reproduction by asexual reproduction, without fertilization. ...
Dyer, Robert J.; Savolainen, Vincent; Schneider, Harald (2012). "Apomixis and reticulate evolution in the Asplenium monanthes ...
It reproduces by apomixis, in which embryos develop without fertilization. This pampas grass, Cortaderia jubata, has long, thin ...
Apomixis Placental mammals Marsupials Live-bearing aquarium fish False vivipary. ...
This grass often reproduces by apomixis, producing seeds without fertilization. It does reproduce sexually at times. Plants can ...
Both are tetraploid species which breed true without pollination by apomixis. Outside of its native range, it is grown as an ...
Areas of divergent opinion include the treatment of Potentilla s.l. and Sorbus s.l.. Compounding the problem is that apomixis ...
Apomixis occurs in many plant species and also in some non-plant organisms. For apomixis and similar processes in non-plant ... in sexual reproduction or in apomixis), though there are occasions when it occurs. Seeds generated by apomixis are a means of ... Other forms of apomixis occur in plants also, including the generation of a plantlet in replacement of a seed or the generation ... and is distinguished from apomixis, which is a replacement of sexual reproduction, and in some cases involves seeds. ...
... abed chaudhury abdul at pican.pi.csiro.au Sun Feb 9 20:25:56 EST 1997 *Previous message: Q ... funded project to establish molecular tools to achieve apomixis (seed set without fertilisation) in rice. Apomictic and sexual ...
Male apomixis (paternal apomixis) involves replacement of the genetic material of an egg by the genetic material of the pollen ... Facultative apomixis means that apomixis does not always occur, i.e. sexual reproduction can also happen. It appears likely ... Recurrent apomixis, is now more often called gametophytic apomixis: In this type, the megagametophyte has the same number of ... It may also be referred to as male apomixis or paternal apomixis. It involves fusion of the male and female gametes and ...
Since most major crops do not express natural apomixis, it is useful to understand the origin and maintenance of apomixis in ... The utilization of apomixis in crops must consider the potential risks of pollen transfer and introgression into sexual crop ... Apomixis, the asexual reproduction via seed, has many potential applications for plant breeding by maintaining desirable ... Coupling of these three steps appears to be a major constraint for shifts to natural apomixis. Adventitious embryony is another ...
T. G. Walker, "Apomixis and vegetative reproduction in ferns," in Reproductive Biology and Taxonomy of Vascular Plants, J. G. ... The Evolutionary Dynamics of Apomixis in Ferns: A Case Study from Polystichoid Ferns. Hong-Mei Liu,1 Robert J. Dyer,2,3 Zhi-You ... D. R. Marshall and A. H. D. Brown, "The evolution of apomixis," Heredity, vol. 47, pp. 1-15, 1981. View at Publisher · View at ... E. Hörandl, C. Dobeš, J. Suda et al., "Apomixis is not prevalent in subnival to nival plants of the European Alps," Annals of ...
This article examines apomixis research, and the main implications that transferring apomixis into crops may have for industry ... It also looks at how the apomixis research agenda is being up led by the private sector through patent applications, licensing ... In discussions of the benefits genetic engineering can bring to small farmers, proponents love to point to apomixis - the ... The apomixis accelerator. In nature, apomixis is widespread but infr-equent: it occurs in around 10% of the 400 families of ...
The tribe Boechereae plays a prominent role in plant research due to the incidence of apomixis and its close relationship to ... In sum, apomixis is now known to occur in five of the nine Boechereae genera. ... Here, we report sexual reproduction in diploid Nevada, diploid Sandbergia and tetraploid Cusickiella and aposporous apomixis in ... apomixis was reported in the Boechereae genera Borodinia and Phoenicaulis. ...
Boechera is the only among the more than 370 genera in the Brassicaceae where apomixis is well documented. Apomixis refers to ... Apomixis refers to the asexual reproduction through seed, and a better understanding of the underlying mechanisms has great ... In this review, we discuss the advantages of the Boechera genus to study apomixis, consider its modes of reproduction as well ... In this review, we discuss the advantages of the Boechera genus to study apomixis, consider its modes of reproduction as well ...
Apomixis is favoured by colonizing modes, for instance post-glacially. Despite its theoretical advantages, apomixis usually ... Apomixis is a common feature of perennial plants, which occurs in ca. 60% of the British flora, but has been largely ignored by ... Apomixis in flowering plants: an overview Message Subject (Your Name) has sent you a message from Philosophical Transactions of ... Agamospermy (apomixis by seed) is relatively uncommon, but gains from the attributes of the seed. It pays agamospermy genes, ...
"Isolation of candidate genes for apomixis in Poa pratensis L., Plant Molecular Biology" on DeepDyve, the largest online rental ... Isolation of candidate genes for apomixis in Poa pratensis L.. Isolation of candidate genes for apomixis in Poa pratensis L. ... Isolation of candidate genes for apomixis in Poa pratensis L.. Albertini, Emidio; Marconi, Gianpiero; Barcaccia, Gianni; Raggi ... If apomixis were well understood and harnessed, it could be exploited to indefinitely propagate superior hybrids or specific ...
Apomixis[edit]. Apomixis (reproduction via asexually formed seeds) is found naturally in about 2.2% of angiosperm genera.[63] ... One type of apomixis, gametophytic apomixis found in a dandelion species[64] involves formation of an unreduced embryo sac due ... "Taxonomy and Biogeography of Apomixis in Angiosperms and Associated Biodiversity Characteristics". CRC Crit Rev Plant Sci. 33 ...
Apomixis. Apomixis, the development of asexual seed (seed not formed via the normal sexual process), is a form of vegetative ...
There are two main types of apomixis.. Types of apomixis. 1. Vegetative reproduction : New plant is produced from stem, leaf, ... What is apomixis ?. Article shared by The substitution of usual sexual reproduction by a form of reproduction which does not ... involve meiosis and syngamy is called apomixis, a term introduced by Winkler in 1908 ...
Hero Apomixis: Chapter Seven. December 8, 2015 Charlie Seller Featured content, Short Stories 0 ...
apomixis. How fertilization activates reproductive development is a fundamental problem in biology. In higher plants, the ovule ... Apomixis and Polycomb Proteins.. Apomictic plant species asexually generate embryo, endosperm, maternal seed coat, and fruit ( ...
title = "Apomixis in Brachiaria decumbens: calendar, carbohydrates and callose.",. author = "D.M.A. Dusi and M.T.M. Willemse", ... Dusi, D.M.A. ; Willemse, M.T.M. / Apomixis in Brachiaria decumbens: calendar, carbohydrates and callose. XVth Int. Congr. on ... Apomixis in Brachiaria decumbens: calendar, carbohydrates and callose. In XVth Int. Congr. on Sexual Plant Reprod., Wageningen ... Apomixis in Brachiaria decumbens: calendar, carbohydrates and callose. / Dusi, D.M.A.; Willemse, M.T.M. ...
We also narrowed the genetic locus responsible for citrus polyembryony, a form of apomixis, to an 80-kb region containing 11 ... This study provides new insights into citrus apomixis and constitutes a promising resource for the mining of agriculturally ... The emergence of apomixis-the transition from sexual to asexual reproduction-is a prominent feature of modern citrus. Here we ... Sporophytic apomixis, including nucellar embryony, is not as well studied.. Apomixis in citrus is sporophytic-the embryos ...
Sebezhko OI, Petukhov VL, Sokolov VA, Korotkevich OS, Kamaldinov EV, Syso AI, Konovalova TV, Marmuleva NI, Narozhnykh KN, Barinov EY, Osadchuk LV. Comparative assessment of radioactive strontium and cesium contents in the feedstuffs and dairy products from various regions of Western Siberia. Res J Pharm Biol Chem Sci 8(3): 1753-1759, 2017. ...
Coexpression and transcriptome analyses identify active apomixis-related genes in Paspalum notatum leaves. ...
Genetic analysis of apomixis in Citrus and Poncirus by molecular markers. Authors. García R, Asíns MJ, Forner J, Carbonell EA ... Genetic analysis of apomixis in Citrus and Poncirus by molecular markers. Publication Overview ... This makes apomixis one of the host important traits in breeding programs for citrus rootstocks. The genetic control of ... Genetic analysis of apomixis in Citrus and Poncirus by molecular markers. Theoretical and applied genetics TAG. 1999; 99(3-4): ...
Apomixis - Embryogenesis - Seed biology - Fruit development - Epigenetics & imprinting - Quantitative analysis of reproduction ...
Apomixis. In: The Encyclopedia of the Biological Sciences . New York: Reinhold Publishing, 45-46. Heslop-Harrison J. 1966 . ... Apomixis. In: Encyclopedia of Biological Sciences . New York: Reinhold, 45-46. Heslop-Harrison J. 1962 . Purposes and ... Apomixis, environment and adaptation. In: Recent Advances in Botany . Toronto University Press, 891-895. Heslop-Harrison J, ... Experimental control of aposporous apomixis in a grass of the Andropogoneae. Botaniska Notiser 116 : 127-141. Heslop-Harrison J ...
... (from Greek ἔντομος, entomos, "that which is cut in pieces or engraved/segmented", hence "insect"; and -λογία, -logia[1]) is the scientific study of insects, a branch of arthropodology. At some 1.3 million described species, insects account for more than two-thirds of all known organisms,[2] date back some 400 million years, and have many kinds of interactions with humans and other forms of life on earth. It is a specialty within the field of biology. Though technically incorrect, the definition is sometimes widened to include the study of terrestrial animals in other arthropod groups or other phyla, such as arachnids, myriapods, earthworms, land snails, and slugs.. Like several of the other fields that are categorized within zoology, entomology is a taxon-based category; any form of scientific study in which there is a focus on insect related inquiries is, by definition, entomology. Entomology therefore includes a cross-section of topics as diverse as molecular genetics, ...
See "Species of Trillium" below.. Trillium (trillium, wakerobin, tri flower, birthroot) is a genus of about 40-50 species of spring ephemeral perennials, native to temperate regions of North America and Asia.. It used to be treated in the family Trilliaceae or Trillium family, a part of the Liliales or Lily order. The AGP II treats Trilliaceae as a synonym of the family Melanthiaceae.. The above ground parts of Trilliums are scapes with three large, leaf-like bracts with the true leaves reduced to underground papery coverings around the rhizomes.. Typical species are Trillium grandiflorum (Large-flowered Trillium) in eastern North America and Trillium ovatum (Western Trillium). Both have white flowers that turn pink as they age.. Picking a trillium seriously injures the plant by preventing the leaf-like bracts from producing food for the next year. A plant takes many years to recover. For this reason in Michigan[1] and Minnesota[2] it is illegal to pick and/or transplant trilliums from public ...
Apomixis - Embryogenesis - Seed biology - Fruit development - Epigenetics & imprinting - Quantitative analysis of reproduction ...
Also, a detailed analysis of evolution of the APOLLO apomixis-associated locus was performed. An assembled genome of B. ... Assembly of the Boechera retrofracta Genome and Evolutionary Analysis of Apomixis-Associated Genes. Sergei Kliver , Mike Rayko ... Also, a detailed analysis of evolution of the APOLLO apomixis-associated locus was performed. An assembled genome of B. ... Boechera; Brassicaceae; genome; assembly; annotation; apomixis Copyright: This is an open access article distributed under the ...
Apomixis mainly occurs in two forms: In gametophytic apomixis, the embryo arises from an unfertilized egg within a diploid ... Apomixis in plants is the formation of a new sporophyte without fertilization. It is important in ferns and in flowering plants ... Male apomixis can occur in rare cases, such as the Saharan Cypress where the genetic material of the embryo are derived ... The term "apomixis" is also used for asexual reproduction in some animals, notably water-fleas, Daphnia. ...
Other key topics include reproduction, renewal, propagation, amphimixis, apomixis, reproductive effort, reproductive success, ...
This is one of several types of apomixis that occur in plants. Apomixis can also happen in a seed, producing a seed that ... Savidan, Y.H. (2000). Apomixis: Genetics and Breeding. Plant Breeding Reviews. 18. pp. 13-86. doi:10.1002/9780470650158.ch2. ... Some otherwise sterile plant polyploids can still reproduce vegetatively or by seed apomixis, forming clonal populations of ...
Apomixis is of great interest to plant breeders, because it allows the production of exact genetic duplicates of plants with ... The technical term for asexual reproduction in plants is apomixis, derived from apo meaning "without," and mixis meaning " ... In apomixis, a new individual is produced by a single parent without pollination or mixing genetic material. A familiar example ... "mingling." Apomixis thus refers to the fact that asexual reproduction lacks the mixing of genes that occurs in sexual ...
  • Agamospermy occurs mainly in two forms: In gametophytic apomixis, the embryo arises from an unfertilized egg cell (i.e. by parthenogenesis) in a gametophyte that was produced from a cell that did not complete meiosis. (wikipedia.org)
  • Therefore, the genetic control of apomictic reproduction found in citrus (nucellar embryony) is quite complex compared to what has been reported for gametophytic apomixis. (citrusgenomedb.org)
  • However, plants can also produce seeds via asexual reproduction, avoiding the need for fertilization, in a process known as gametophytic apomixis (hereafter referred to as apomixis, see Glossary, Box 1 ). (biologists.org)
  • Contrary to the sexual pathway, wherein the diversity of progeny is derived from meiotic recombination during gamete formation followed by parental gamete fusion and embryogenesis at fertilization, apomixis avoids meiosis during female gamete development, and embryogenesis initiates without fertilization. (beds.ac.uk)
  • Apomixis is the mechanism of seed production without involving the process of meiosis and syngamy. (saralstudy.com)
  • Apomixis is the asexual production of seeds, so that apomictic seeds are clones of the mother plant. (grain.org)
  • In Poa pratensis the cDNA-AFLP method of mRNA profiling allowed us to visualize a total of 2248 transcript-derived fragments and to isolate 179 sequences that differed qualitatively or quantitatively between apomictic and sexual genotypes at the time of flowering when the primary stages of apomixis occur. (deepdyve.com)
  • Molecular markers linked to QTLs governing apomixis will be useful to assist selection of future apomictic rootstocks for citrus varieties. (citrusgenomedb.org)
  • Observed changes in small RNA targets and biogenesis pathways within sexual and apomictic ovaries will underlie future functional research into apomixis initiation in Hieracium . (beds.ac.uk)
  • As apomixis is not evident in major seed crops, isolation of genes from apomictic model species with the intention to transfer them to crops has been a major focus of research. (beds.ac.uk)
  • In botany, apomixis is asexual reproduction without fertilization. (wikipedia.org)
  • In autonomous apomixis, seed development occurs without pollination and thus without fertilization of either the egg cell or the polar cell. (pnas.org)
  • Apomixis is a reproductive process in plants where seed are produced without the union (fertilization) of the egg cell and sperm (gametes) to form an embryo. (usda.gov)
  • Reproduction without fertilization (synonym to apomixis). (springer.com)
  • In another instance of apomixis, the ovule cells (2n) grow into an embryo opposite to fertilization. (gardenguides.com)
  • Sometimes apomixis includes embryo development as well as egg fertilization. (gardenguides.com)
  • Apomixis (including apospory and diplospory) is a type of reproduction that does not involve fertilization. (wikipedia.org)
  • Since most major crops do not express natural apomixis, it is useful to understand the origin and maintenance of apomixis in natural plant systems. (cabi.org)
  • The utilization of apomixis in crops must consider the potential risks of pollen transfer and introgression into sexual crop fields, which might be overcome by using pollen-sterile or cleistogamous variants. (cabi.org)
  • This article examines apomixis research, and the main implications that transferring apomixis into crops may have for industry, farmers and the environment. (grain.org)
  • Uncommon in wild plants and rare in crops, apomixis is one of the most cherished dreams of plant breeders. (grain.org)
  • But in spite of earlier claims that its transfer into crops was around the corner, apomixis is proving elusive. (grain.org)
  • The most obvious benefit of introducing apomixis into crops would be to allow selecting an individual plant and propagate it as clones through its seeds. (grain.org)
  • Like genetic engineering, apomixis would demolish some of the species barriers that have contained the evolution of our crops. (grain.org)
  • As demonstrated by fruit crops, apomixis enables breeders to fix valuable traits and heterozygosity. (nature.com)
  • Use of apomixis in plant breeding could economize and speed delivery of new plant varieties by preserving unlinked complex traits, such as heterosis in hybrid crops, within a single seed generation. (beds.ac.uk)
  • There has been a great deal of interest in using apomixis in the development of uniform, true breeding, vigorous hybrids in many of the food and grain crops, but apomixis does not naturally occur in any of these major crops. (usda.gov)
  • Efforts to transfer apomixis to these crops from wild relatives using conventional breeding methods have not been successful. (usda.gov)
  • Crops that reproduce through apomixis conserve the same traits from one generation to the next, essentially locking in sought-after characteristics such as drought tolerance or high nutritional value. (rural21.com)
  • Isolation of candidate genes for apomixis in Poa pratensis L. (deepdyve.com)
  • We also narrowed the genetic locus responsible for citrus polyembryony, a form of apomixis, to an 80-kb region containing 11 candidate genes. (nature.com)
  • This study provides new insights into citrus apomixis and constitutes a promising resource for the mining of agriculturally important genes. (nature.com)
  • Alice: Coexpression and transcriptome analyses identify active apomixis-related genes in Paspalum notatum leaves. (embrapa.br)
  • Identification of apomixis genes is confounded by the polyploid nature, high genome complexity and lack of genomic sequence integration with reproductive tissue transcriptomes in most apomicts. (beds.ac.uk)
  • Identification of genes regulating apomixis has been hindered due to limited genomic and transcriptomic resources available in apomict model species. (beds.ac.uk)
  • In this study, molecular tools were used to search for genes that are involved in the expression of apomixis. (usda.gov)
  • Polyploidy and apomixis may contribute to taxonomic difficulties by locking suites of traits together into morphologic forms. (efloras.org)
  • Thus "normal asexual reproduction" of plants, such as propagation from cuttings or leaves, has never been considered to be apomixis, but replacement of the seed by a plantlet or replacement of the flower by bulbils were categorized as types of apomixis. (wikipedia.org)
  • Maheshwari used the following simple classification of types of apomixis in flowering plants: Nonrecurrent apomixis: In this type "the megaspore mother cell undergoes the usual meiotic divisions and a haploid embryo sac [megagametophyte] is formed. (wikipedia.org)
  • There are two main types of apomixis. (publishyourarticles.net)
  • The first example of apomixis in citrus was reported in 1719, when Leeuwenhoek observed the development of two plantlets from the same seed 4 . (nature.com)
  • Recently, an example of apomixis in gymnosperms was discovered (see Pichot, C., et al, in the 5 July 2001 issue of Nature ). (biology-pages.info)
  • Boechera is the only among the more than 370 genera in the Brassicaceae where apomixis is well documented. (frontiersin.org)
  • In this review, we discuss the advantages of the Boechera genus to study apomixis, consider its modes of reproduction as well as the inheritance and possible mechanisms controlling apomixis. (frontiersin.org)
  • Male apomixis (paternal apomixis) involves replacement of the genetic material of an egg by the genetic material of the pollen. (wikipedia.org)
  • Is this paternal apomixis in a surrogate mother a desperate attempt to avoid extinction? (biology-pages.info)
  • Some authors included all forms of asexual reproduction within apomixis, but that generalization of the term has since died out. (wikipedia.org)
  • How is the ability to reproduce by apomixis advantageous compared with other forms of asexual. (bartleby.com)
  • Facultative apomixis means that apomixis does not always occur, i.e. sexual reproduction can also happen. (wikipedia.org)
  • These findings suggest that the accessions analyzed may reproduce by facultative apomixis. (usda.gov)
  • Background: Semigamy in cotton is a type of facultative apomixis controlled by an incompletely dominant autosomal gene (Se). (ebscohost.com)
  • Apomixis is a common feature of perennial plants, which occurs in ca . 60% of the British flora, but has been largely ignored by reproductive theoreticians. (royalsocietypublishing.org)
  • R. A. Bicknell and A. M. Koltunow, "Understanding apomixis: recent advances and remaining conundrums," Plant Cell , vol. 16, pp. (hindawi.com)
  • Apomixis in citrus is sporophytic-the embryos develop from somatic nucellar cells-and very stable among commercial varieties, including sweet oranges, mandarins, grapefruits and lemons 7 . (nature.com)
  • Agricultural scientists would dearly love to convert these plants to apomixis: making embryos that are genetic clones of themselves rather than the product of sexual reproduction with its inevitable gene reshuffling. (biology-pages.info)
  • In adventitious embryony (sporophytic apomixis), an embryo is formed directly (not from a gametophyte) from nucellus or integument tissue (see nucellar embryony). (wikipedia.org)
  • Falcinelli, Mario 2005-04-07 00:00:00 The essential feature of apomixis is that an embryo is formed autonomously by parthenogenesis from an unreduced egg of an embryo sac generated through apomeiosis. (deepdyve.com)
  • The emergence of apomixis-the transition from sexual to asexual reproduction-is a prominent feature of modern citrus. (nature.com)
  • This makes apomixis one of the host important traits in breeding programs for citrus rootstocks. (citrusgenomedb.org)
  • Asexual reproduction through seeds, or apomixis, is a process that holds much promise for agricultural advances. (usda.gov)
  • Adventitious embryony is another developmental pathway toward apomixis. (cabi.org)
  • Sporophytic apomixis, including nucellar embryony, is not as well studied. (nature.com)
  • One of the markers associated to apomixis (Apo2) is also associated to embryony type. (citrusgenomedb.org)
  • See also androgenesis and androclinesis described below, a type of male apomixis that occurs in a conifer, Cupressus dupreziana. (wikipedia.org)
  • In nature, apomixis is widespread but infr-equent: it occurs in around 10% of the 400 families of flowering plants, but only in 1% of the 40,000 species that make up those families. (grain.org)
  • Apomixis occurs in many of the warm-season grasses including buffelgrass. (usda.gov)
  • Apomixis occurs in more than 400 plant species belonging to ∼40 genera. (biologists.org)
  • Among polystichoid ferns, apomixis evolved several times independently in three different clades. (wikipedia.org)
  • Examples of apomixis can be found in the genera Crataegus (hawthorns), Amelanchier (shadbush), Sorbus (rowans and whitebeams), Rubus (brambles or blackberries), Poa (meadow grasses), Nardus stricta (Matgrass), Hieracium (hawkweeds) and Taraxacum (dandelions). (wikipedia.org)
  • Many studies suggest that hybridization, either on diploid or polyploid cytotypes, is a major trigger for the formation of unreduced female gametophytes, which represents the first step toward apomixis, and must be combined to parthenogenesis, the development of an unfertilized egg cell. (cabi.org)
  • Apomixis is reported to occur in about 10% of globally extant ferns. (wikipedia.org)
  • In sum, apomixis is now known to occur in five of the nine Boechereae genera. (frontiersin.org)
  • Polyploid forms and asexual seed production (apomixis) occur in some species. (efloras.org)
  • In flowering plants, the term "apomixis" is commonly used in a restricted sense to mean agamospermy, i.e., clonal reproduction through seeds. (wikipedia.org)
  • Although the evolutionary advantages of sexual reproduction are lost, apomixis can pass along traits fortuitous for evolutionary fitness. (wikipedia.org)
  • in other words, that "obligate apomixis" is an artifact of insufficient observation (missing uncommon sexual reproduction). (wikipedia.org)
  • Apomixis, the asexual reproduction via seed, has many potential applications for plant breeding by maintaining desirable genotypes over generations. (cabi.org)
  • But their pollen is often viable, so that apomixis can also be transmitted through the more common mechanism of sexual reproduction. (grain.org)
  • Here, we report sexual reproduction in diploid Nevada , diploid Sandbergia , and tetraploid Cusickiella and aposporous apomixis in tetraploids of Polyctenium and Sandbergia . (frontiersin.org)
  • Apomixis refers to the asexual reproduction through seed, and a better understanding of the underlying mechanisms has great potential for applications in agriculture. (frontiersin.org)
  • Asexual reproduction through seed, called apomixis, is key in developing new crop varieties for widespread use. (rural21.com)
  • an organism reproducing by, or formed by, apomixis, nonsexual reproduction from an unfertilized ovum. (absp.org.uk)
  • relating to apomixis, nonsexual reproduction, from an unfertilized ovum. (absp.org.uk)
  • Other plants, especially weeds such as hawkweed and dandelions, can produce true seeds that are clones of themselves without sexual reproduction -- a still poorly understood process called apomixis. (ucdavis.edu)
  • Recently, apomixis was reported in the Boechereae genera Borodinia and Phoenicaulis . (frontiersin.org)
  • Compounding the problem is that apomixis is common in several genera. (eol.org)
  • Application of apomixis, or asexual seed formation, in crop breeding would allow rapid fixation of complex traits, economizing improved crop delivery. (beds.ac.uk)
  • Despite its theoretical advantages, apomixis usually coexists with sexuality, suggesting 'hidden' disadvantages. (royalsocietypublishing.org)
  • Chi-square tests of independence were significant for both 1:1 ratios as expected with sexuality and 1:0 ratios as expected with apomixis. (usda.gov)
  • The combination of apomixis' capacity to create and stabilise new genetic combinations and to break the species barriers could lead to the 'asexual revolution', which some think could even dwarf the Green Revolution. (grain.org)
  • It is a widespread and well known group of over 375 species which reproduce by apomixis . (wikipedia.org)
  • In the past, a great deal of research has been conducted studying the genetics of apomixis in this grass, and because of this, buffelgrass is an excellent model species to use in learning more about apomixis. (usda.gov)
  • Consequently, understanding the genetic diversity of this species is relevant to the utilization and conservation of its germplasm resources, to population genetic studies, and to the evolution of apomixis in this dioecious species. (bioone.org)
  • Part I. The mechanisms of apomixis. (springer.com)
  • However, the molecular mechanisms underlying apomixis are currently poorly understood. (usda.gov)
  • With this molecular marker, plant breeders can run a quick and inexpensive test when Brachiaria grasses are seedlings to identify whether they reproduce through apomixis. (rural21.com)
  • In discussions of the benefits genetic engineering can bring to small farmers, proponents love to point to apomixis - the production of cloned seed. (grain.org)
  • The genetic control of apomixis was studied in a 50-tree progeny derived from the cross C. volkameriana×P. trifoliata using 69 molecular markers and bulked segregant analysis. (citrusgenomedb.org)
  • Apomixis has been described in a close relative of Arabidopsis , Arabis holboellii ( 3 ), and some genetic data support a one or two gene control of apomixis ( 3 ), so we reasoned that a mutational approach in Arabidopsis might detect mutants displaying some components of apomixis. (pnas.org)
  • Nosrati, H , Price, AH & Wilcock, CC 2010, ' No evidence of apomixis in matroclinal progeny from experimental crosses in the genus Fragaria (strawberry) based on RAPDs ', Euphytica , vol. 171, no. 2, pp. 193-202. (elsevier.com)
  • If apomixis were well understood and harnessed, it could be exploited to indefinitely propagate superior hybrids or specific genotypes bearing complex gene sets. (deepdyve.com)
  • Many such hybrids use apomixis to propagate themselves. (biology-pages.info)
  • The many races of Kentucky bluegrass growing in lawns across North America and the many races of blackberries are two examples of sterile hybrids that propagate successfully by apomixis. (biology-pages.info)
  • In plants with independent gametophytes (notably ferns), the term is still used interchangeably with "apomixis", and both refer to the formation of sporophytes by parthenogenesis of gametophyte cells. (wikipedia.org)
  • C. H. Park and M. Kato, "Apomixis in the interspecific triploid hybrid fern Cornopteris christenseniana (Woodsiaceae)," Journal of Plant Research , vol. 116, no. 2, pp. 93-103, 2003. (hindawi.com)
  • These have been attributed to either accidental selfing and/or pollen contamination, or apomixis. (elsevier.com)
  • Our results showed that the complete morphological similarity of progeny to the seed parent, even in recessive characteristics, cannot therefore be taken as evidence of apomixis, and may rather indicate the heterozygosity of the pollen parent, emphasising the need to use DNA markers for confirmation of apomixis. (elsevier.com)
  • The absence of apomixis among matroclinal progeny in this study casts doubt on previous reports of apomixis in Fragaria. (elsevier.com)
  • Also, a detailed analysis of evolution of the APOLLO apomixis-associated locus was performed. (preprints.org)
  • Analysis of quantitative trait loci (QTLs) revealed the presence of six genomic positions (two in P. trifoliata and four in C. volkameriana) contributing individually up to 24% of the total variation for apomixis. (citrusgenomedb.org)