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What are the types of varieties?
A taxonomic subdivision below species in biological taxonomy. 12 article 4 of international code of botanical nomenclature 1975 adopted by the international botany congress stipulates that species, varieties, subtypes, forms and subspecies are arranged in sequence. A variety is a plant in a species. Under the influence of different environmental conditions or artificial selection, mutation and hybridization, some aspects of morphological structure or physiological characteristics have mutated, forming groups different from the original species. Both varieties and subspecies are intraspecific variation types, and there is no difference in essence. However, the subspecies transformed species have more obvious geographical distribution areas, and their variation characteristics are more prominent and stable. Varieties are mostly used for plant classification, and subspecies are mostly used for animal classification. The name of the variety should be abbreviated (var. ) after the variety name, add the variety name, followed by the abbreviation of celebrity's surname or surname, such as the scientific name of peach variety "Prunus persica var.densa Makino". There are many varieties of fruit trees in the long-term development process, which expands and increases the scope and ways of further utilization of human beings. Such as apples. There are four varieties: Daosheng Apple. ), paradise apple (M. pumila var. Paradise apple (Paradicaaca schneider), red-fleshed apple (M. pumila var. Neznets Chiana Dick). ) and drooping apples (M. pumila). Finger-fingered dactylophora; Mountain red, all kinds of hawthorn, etc. Because the same variety has similar morphological and biological characteristics, it can provide basis for parent selection and cultivation techniques of introduction and breeding.
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