Nucellar embryony (notated Nu+) is a form of seed reproduction that occurs in certain plant species, including many citrus varieties. (wikipedia.org)
Chinese-provenance material is conspicuous by its rarity, although a plant from Hunan at Tregrehan, UK has been attributed to this species (Jan De Langhe pers. (treesandshrubsonline.org)
It is also the most promiscuous, having formed apomictic hybrids with at least 15 other species of Boechera . (neonscience.org)
The complex genomic composition of allopolyploid plants leads to morphologically diverse species. (bvsalud.org)
Plants with margins of some or all leaves entire may be encountered in almost all species of Grindelia and may predominate in some plants, populations, or species. (neonscience.org)
Yet, their traditional food systems include many, diverse plant species, as well as some marine algae, lichens and fungi. (botany.org)
Perennial1
the stem pubescence of E. tracyi is different, the stolons much less commonly produce rooting plantlets at the tips, and the plants tend to be perennial with woody or lignescent caudices, although they are variable both in habit and duration. (efloras.org)
Stems usually 2-5 per caudex branch, arising laterally proximal to sterile shoots or rosette, often elevated above ground surface on woody base, (1.5-)2-7 dm, densely pubescent proximally, trichomes short-stalked, Y-shaped, 0.2-0.4 mm, often mixed with 3-5-rayed or (rarely) simple ones, usually glabrous distally. (swbiodiversity.org)
Although superficially similar, B. perennans is distinguished from B. gracilenta by having stems arising from above ground surface on woody bases, proximal stems with mostly Y-shaped trichomes, strongly dentate margins on basal leaves, and uniseriate seeds. (swbiodiversity.org)
Plant foods include roots and other underground parts, green leaves and stems, many fruits, inner bark of trees, and a range of beverage teas. (botany.org)
Reproductive1
To be seedless, a citrus must exhibit self-incompatibility, another reproductive trait within citrus fruits and many seed plants. (wikipedia.org)
Vascular plants2
Manual of vascular plants of northeastern United States and adjacent Canada. (neonscience.org)
Diverse specialised metabolites contributed to the success of vascular plants in colonising most terrestrial habitats. (bvsalud.org)
Traits2
most commercial scion varieties produce mainly nucellar seedlings which do not inherit any of the traits of the "father" plant. (wikipedia.org)
Within and among populations of grindelias, some morphologic traits appear to vary more from plant to plant than in most genera of composites. (neonscience.org)
Genetic1
During the development of seeds in plants that possess this genetic trait, the nucellus tissue which surrounds the megagametophyte can produce nucellar cells, also termed initial cells. (wikipedia.org)
Ecological1
The resulting elevational patterns contribute to the chemical diversity of willows and suggest that variable selective pressure across ecological gradients may, more generally, underpin complex changes in plant chemistry. (bvsalud.org)
Rosette1
In March through June, plants of Erigeron tracyi produce leaves in a basal rosette usually with a single, erect, monocephalous, stem. (efloras.org)
20231
It was available from European nurseries by 1912 ( Arnold Arboretum 2023 ), while Clarke (1988) recorded three old plants at Kew, received from the Yokohama Nurseries in 1906. (treesandshrubsonline.org)
Sexual1
Furthermore, the United States has extended patent protection to plants produced by either sexual or asexual reproduction and to plant parts including seeds and tissue cultures ( Ex parte Hibberd (1985) 227 USPQ 433). (ncsu.edu)
Genus1
The name Asteraceae (English: /ˌæstəˈreɪsi, -siˌaɪ, -siˌeɪ, -siˌiː/) comes to international scientific vocabulary from New Latin, from Aster, the type genus, + -aceae, [14] a standardized suffix for plant family names in modern taxonomy. (everipedia.org)
Cultivation2
Lots of cultivation guides, very little on plant uses. (theferns.info)
Excellent range of photographs, some cultivation details but very little information on plant uses. (theferns.info)
Fertile1
Self incompatibility is the phenomena where hermaphroditic plants are not able to produce fertile embryos after self-pollination. (wikipedia.org)
Mechanisms1
Under the Trade-Related Aspects of Intellectual Property Agreement which binds World Trade Organization members, member countries that choose not to provide such mechanisms for plants under their national patent system must provide an alternative way in which an entity may claim that it has a legal right to intellectual property, to the partial exclusion of the rights of others, in plants and plant products. (ncsu.edu)
Some patterns of variation within Grindelia are similar to those found in genera characterized by apomictic seed production (e.g., local morphologic variants such as discoid plants in otherwise radiate taxa, hairy plants in otherwise glabrous taxa, narrow-leaved plants in otherwise broad-leaved taxa, etc. (neonscience.org)
Local1
The plant is harvested from the wild for local use as a medicine and possibly as a food. (theferns.info)
Surface1
Evapotranspiration (ET) is the sum of evaporation and plant transpiration from the Earth's land surface to atmosphere. (eol.org)
Form1
Apparent hybrids with E. modestus and E. flagellaris are occasionally encountered, and the most common form of E. tracyi is perhaps (speculative) a stabilized, apomictic hybrid between the latter and E. divergens . (efloras.org)
Evolution2
PhD thesis: Biogeography and evolution of the largest adaptive radiation of woody plants (Melicope, Rutaceae) on the Hawaiian Islands. (uni-goettingen.de)
Understanding how distinct aspects of chemical diversity arise through heterogeneous environmental pressures can help us understand the effects of abiotic and biotic stress on plant evolution and community assembly. (bvsalud.org)
In some countries (including the United States, Australia and Europe) plants can be covered by patent claims provided that the patent applications are able to meet all of the necessary standards and requirements that exist in that country for patentability. (ncsu.edu)
In Europe, individual plant varieties per se are not patentable, however, a plant which is characterized by a particular gene (as opposed to its whole genome) is not included in the definition of a plant variety and is therefore patentable. (ncsu.edu)
In Europe, transgenic plants are patentable if they are not restricted to a specific plant variety, but represent a broader plant grouping. (ncsu.edu)
Growth1
The time of year when a plant has its most active growth. (eol.org)