Variety (botany) - Citizendia

Variety (biology) redirects here.

In botanical nomenclature or biological nomenclature, variety is a low-level taxonomic rank below that of species and signifies members of different populations can interbreed easily, but not usually such that all traits (appearance attributes) will run true, and in fact usually will blend. Botanical nomenclature is the formal naming of plants from a scientific point of view Taxonomic rank ( rank, category, taxonomic category is an abstract term used in the Scientific classification, or Taxonomy, of organisms As such, it gets a ternary name (a name in three parts). In botanical nomenclature the ICBN prescribes a "three part name" ( ternary name) for any taxon below the rank of species The Variety taxonomy is most often used in classifying plants, but is on occasion used colloquially and industrially to differentiate between pedigree bloodlines in the animal kingdom as well. Official zoological nomenclature does not recognize the rank of variety, only sub-species. In Zoology, as in other branches of Biology, subspecies is the Taxonomic rank immediately subordinate to a Species.

A variety will have an appearance distinct from other varieties, but will hybridize freely with those other varieties (if brought into contact). Usually varieties will be geographically separate from each other, or as in the case of animals, bred carefully in controlled segregation from other varieties.

Example: The pincushion cactus, Escobaria vivipara (Nutt. ) Buxb. , is a wide-ranging variable species occurring from Canada to Mexico, and found throughout New Mexico below about 2600 m. Nine varieties have been described. Where the varieties of the pincushion cactus meet, they intergrade. The variety Escobaria vivipara var. arizonica is from Arizona, while Escobaria vivipara var. neo-mexicana is from New Mexico.

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To plant breeders, at least in countries that are signatory to the UPOV Convention, "variety" or "plant variety" is a legal term. The International Union for the Protection of New Varieties of Plants or UPOV ( French: U nion internationale pour la p rotection des See also Variety (botany A "plant variety " is a Legal term, following the UPOV Convention
In zoological nomenclature, the only officially-regulated rank below that of species is that of subspecies. The International Code of Zoological Nomenclature is a set of rules in Zoology that have one fundamental aim to provide the maximum universality and continuity in the naming In Zoology, as in other branches of Biology, subspecies is the Taxonomic rank immediately subordinate to a Species. Forms and morphs are used instead of varieties if needed, but are unregulated by the ICZN. This article is not about formal Zoological nomenclature; it describes terms that are sometimes used but have no standing under the ICZN. Polymorphism in biology occurs when two or more clearly different Phenotypes exist in the same population of a species — in other words the occurrence of more than one "ICZN" redirects here It is also sometimes used for the International Code of Zoological Nomenclature in error
In bacteriological nomenclature "variety" and "subspecies" are used interchangeably. The International Code of Nomenclature of Bacteria ( ICNB) governs the scientific names for Bacteria.
In viticulture, what is referred to as "grape varieties" are in reality cultivars rather than varieties according to usage in the International Code of Nomenclature for Cultivated Plants, since they are propagated by cuttings and have properties that are not stable under sexual reproduction (seed plants). Viticulture (from the Latin word for Vine) is the Science, production and study of Grapes which deals with the series of A cultivar is a cultivated Plant that has been selected and given a unique name because of its decorative or useful characteristics it is usually distinct from similar The International Code of Nomenclature for Cultivated Plants ( ICNCP) regulates the naming of Cultivars Cultivar Groups and Graft-chimaeras Plant cutting, also known as striking/cloning is a technique for vegetatively (asexually propagating plants in whicha piece of the source plant containing at least one The spermatophytes (from the Greek word "Σπερματόφυτα" (also known as phanerogams) comprise those Plants that produce Seeds They are However, usage of the term variety is so entrenched in viticulture that a change to cultivar is unlikely.

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