Application Of Selection Indices For Creation Of Soybean Cultivars With Increased Drought Tolerance And Yield

The article is devoted to the differentiation of soybean cultivars by yield levels in different years according to the hydrothermal regime and a number of indices which characterize the samples’ resistance to drought. The research identifies genotypes with high and low levels of drought tolerance by various indices. The best soybean samples with high levels of drought tolerance have been distinguished according to the complex of indices, namely: Artemida, according to such indices as TOL, YRR, SSI, SSPI, YSI, ISR; Kniazhna – MP, YI, GMP, HMP, STI, DI, RDI, with the formation of a high yield; ♀ 284/88 x ♂ Vinnychanka, ♀ 4912/88 x ♂ Osoblyva – MP, TOL, YRR, SSI, SSPI, YI, YSI, HMP, GMP, STI, ISR, DI, RDI, with the formation of a high yield; Canatto – MP, YI, GMP, HMP, STI, DI, RDI, ATI, with the formation of a high yield; Kabott – MP, YI, GMP, HMP, STI, DI, RDI; Roksolana – MP, YI, GMP, HMP, STI, DI, RDI, ATI, with the formation of a high yield, under favorable and unfavorable conditions; Femida – TOL, YRR, SSI, SSPI, YSI, ISR; Vezha − TOL, YRR, SSI, SSPI, YSI, ISR; Kyivska 98 – MP, YI, GMP, HMP, STI, DI, RDI with the formation of a high yield, both under better and worse conditions; ♀ Zolotysta x ♂ WU 19 – MP, YI, GMP, HMP, STI, DI, RDI, with the formation of a high yield, as in the case with better conditions.