VARIABILITY OF MACRO- AND MICROELEMENT COMPOSITION OF ACCESSIONS OF VIGNA UNGUICULATA (L.) WALP. IN THE SOUTH OF WESTERN SIBERIA AND IN THE CRIMEA

Different environmental factors can cause changes in the elemental composition of plants. The research attempts to shift focus from studying effect soil on plants assessing impact multifactorial ecological blocks this index. Using method atomic absorption spectroscopy, content K, Na, Ca, Mg, Fe, Zn, Cu, Mn, Co, Li was determined seeds 5 accessions a new for Russia crop − vigna (Vigna unguiculata) when growing south Western Siberia (54° N 83° E) and Crimea (44° N, 34° E)]. Coefficient Variation (CV) element contents cowpea two regions significant 14 53%. highest homeostasis accumulation macro- microelements noted cultivar Sibirskiy razmer (CV = 15–23%), macroelements Vigna catjang 14%). Both were characterized by reduced Mn and, especially, Fe compared other cultivars. rest showed high rate variation under different conditions 29–53%). differed relatively lower variability – both cultivation, while Li, Cu highest. Cultivar Yunnanskaya had rates Ca (882–1357 mg/kg) (96–196 whereas Krasnaya pozdniaya Krasno-pestraya Mg 1632–2131 1737–1986 mg/kg, respectively.