Reproduction, Asexual
Ranunculus
Pennisetum
Asteraceae
Erigeron
Manihot
Arabis
Saxifragaceae
Achillea
Apomixis
Gametogenesis, Plant
Ranunculaceae
Polyploidy
Cenchrus
Taraxacum
Seeds
Pacific States
Diploidy
Chromosomes, Plant
Parthenogenesis
Poaceae
Hybridization, Genetic
Biological Evolution
Angiosperms
Gene Expression Regulation, Plant
Cytogenetic Analysis
Meiosis
Crosses, Genetic
Genetic Markers
Models, Genetic
Polyarteritis Nodosa
Apomixis in hawkweed: Mendel's experimental nemesis. (1/24)
(+info)Isolation and characterization of microsatellite loci from apomictic Hypericum perforatum (Hypericaceae). (2/24)
(+info)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)
(+info)Evolution of the apomixis transmitting chromosome in Pennisetum. (5/24)
(+info)Sexual reproduction development in apomictic Eulaliopsis binata (Poaceae). (6/24)
(+info)Boechera, a model system for ecological genomics. (7/24)
(+info)Density-independent mortality and increasing plant diversity are associated with differentiation of Taraxacum officinale into r- and K-strategists. (8/24)
(+info)Polyploidy is a condition where an organism has more than two sets of chromosomes, which are the thread-like structures that carry genetic information. It can occur in both plants and animals, although it is relatively rare in most species. In humans, polyploidy is extremely rare and usually occurs as a result of errors during cell division or abnormal fertilization.
In medicine, polyploidy is often used to describe certain types of cancer, such as breast cancer or colon cancer, that have extra sets of chromosomes. This can lead to the development of more aggressive and difficult-to-treat tumors.
However, not all cases of polyploidy are cancerous. Some individuals with Down syndrome, for example, have an extra copy of chromosome 21, which is a non-cancerous form of polyploidy. Additionally, some people may be born with extra copies of certain genes or chromosomal regions due to errors during embryonic development, which can lead to various health problems but are not cancerous.
Overall, the term "polyploidy" in medicine is used to describe any condition where an organism has more than two sets of chromosomes, regardless of whether it is cancerous or non-cancerous.
The symptoms of PAN can vary depending on the location and severity of the inflammation, but may include:
* Fever
* Headache
* Joint pain and swelling
* Skin rash or lesions
* Abdominal pain
* Weight loss
* Fatigue
* Numbness or weakness in the limbs
The exact cause of PAN is not known, but it is believed to be an autoimmune disorder, meaning that the body's immune system mistakenly attacks healthy tissues. It can occur at any age, but is more common in adults between the ages of 40 and 60.
There is no cure for PAN, but treatment options include:
* Corticosteroids to reduce inflammation
* Immunosuppressive drugs to suppress the immune system
* Plasmapheresis to remove harmful antibodies from the blood
* Biologics to target specific proteins involved in the disease process
The prognosis for PAN varies depending on the severity and location of the inflammation, as well as the promptness and effectiveness of treatment. In general, the condition can be challenging to diagnose and treat, and the long-term outcome is often uncertain.
Apomixis
Ploidy
Nucellar embryony
Botany
G. Ledyard Stebbins
Asexual reproduction
Hosta ventricosa
Gregor Mendel
Antennaria rosea
Anna Koltunow
Pseudogamy
Parthenocarpy
Plant reproduction
Vegetative reproduction
Meloidogyne javanica
Karpatiosorbus
Parthenogenesis
True-breeding organism
Bryan Alwyn Barlow
Megaspore
Callose
Tachibana orange
Yuzu
Danthonia intermedia
Gametogamy
Parthenium argentatum
Orange (fruit)
Alpine plant
Citrus ryukyuensis
Mandarin orange
Reproductive biology of two species of Kielmeyera (Guttiferae) in the cerrados of Central Brazil | Journal of Tropical Ecology ...
Staff | Max Planck Institute of Molecular Plant Physiology
Agronomy | Free Full-Text | Parthenocarpy and Self-Incompatibility in Mandarins
Témata prací (Výběr práce)
Zhang, Li-Bing > Missouri Botanical Garden > Research...
Search Results | ASHS
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MeSH Browser
Navegar :: Artículos y capítulos :: FAUBA Digital
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Paspalum/genética
DeCS
Alice: Genomic selection in tropical forage grasses: current status and future applications.
Botany 2016 - Abstract Search
Summary report 21-30 June 1999
NCERT Solutions for Class 12 Biology Chapter 2 Sexual Reproduction in Flowering
Allium amplectens - FNA
World Colleges Information | World Best Colleges | World Top Universities | Study Abroad | Colleges in India
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ncert solutions for class 12 biology chapter- 2 - Biologysir
Literature 2019 | International Cichorieae Network
TSitologiia i genetika (Cytology and Genetics) 2008, Issue 3
Shark baby born to a female-only tank could be an extremely rare occurrence | TechThoroughFare
Consortium of Intermountain Herbaria - Boechera
Abiotic Stresses and Their Effects on Plant Growth, Yield and Nutritional Quality of Agricultural Produce-International Journal...
purchase dapoxetine for sale - CRM Score
A berkenye fajok
What is a fact about asexual reproduction? - MSI
NixPages: 2015
Asexual1
- Apomixis maybe defined (Winkler, 1908, 1934) as the substitution for sexual reproduction (amphimixis) of an asexual process which does not involve any nuclear fusion. (plantlet.org)
Seeds2
- Some hybrids do reproduce true to type via nucellar seeds in a process called apomixis . (wikipedia.org)
- A rare form of apomixis in which only pollen (i.e. male gamete) is required to produce viable seeds. (nih.gov)
Genetically2
- In all cases of apomixis, through the avoidance of meiosis and fertilisation, the offspring is genetically identical to that of the mother plant. (europa.eu)
- Apomixis allows the establishment of genetically stable seed propagating clones of crops, which can perpetuate themselves across countless sporophytic generations . (bvsalud.org)
Crops2
Angiosperms1
- Nygren, A. 1967: Apomixis in the angiosperms. (ufz.de)
Sexual reproduction1
- Because apomixis occurs more frequently than sexual reproduction, most heritability estimates should fall closer to the midparent value, resulting in lower heritability. (ashs.org)
Plant1
- Genetic mechanism and molecular basis of apomixis in plant]. (bvsalud.org)
High1
- This indicates a high probability of their ability to seed reproduction by apomixis. (sgu.ru)