Assessment of ecological plasticity and stability of soybean breeding material under irrigated conditions of Samara Zavolzhye

The study of soybean varieties in the breeding nursery for the parameters of ecological plasticity and stability in non-irrigated conditions was carried out in 2016 - 2019 on the basis of the Volga NIISS - a branch of the SamSC RAS. On average, over the years of study by seed productivity, samples IHAR-NK 88/2, K-445/2 and k-177 were allocated, exceeding the standard by 11,5-19,0%. Based on the results of the study of breeding samples of soybeans, for further study, genotypes were identified that combine high yield with plasticity: kp 2009, IHAR-NK 88/2, Sedmitsiya-09/4. Of great interest are highly productive specimens with high and medium ecological stability: 073-14, Yuzhanka, k-177, k-145/2, Belotsvetkovaya-4. Breeding accessions Velichava-09/16, M:S 54/145, Tanais, Varyag with productivity potential in non-irrigated conditions above 1,7 t / ha and high sensitivity to changes in environmental factors, conditions of the Samara Trans-Volga region.