Taxonomic diversity of crop wild relatives in South Ural region and adjoining areas

Comparison of crop wild relatives (CWR) of Bashkortostan Republic and adjoining areas (Perm, Chelyabinsk, Orenburg Oblasts, Tatarstan and Udmurtia) are made. It turned out that number of species and genera of CWR grows up in the southern direction and depends on the whole floristic diversity. Maximum range of CWR species is presented in Orenburg Oblast (267), Bashkortostan Republic is second (256). In all floras the most of CWR account for Poaceae and Fabaceae families, abundant of forage plants. Maximum similarity of CWR species composition of Bashkortostan Republic and Chelyabinsk Oblast (Jaccard’s coefficient of community - 0,76) is determined by the similar geographic location of the territories: both of them belong to the South Urals and lie in the same natural zones. South Ural Region is characterized by high species wealth of onions (16 species), snow grasses (15 species) and thymes (11 species).