Determination of drought resistance of alfalfa populations for seed use by mathematical indices

The purpose of research. To evaluate the response varieties and populations seed alfalfa under different environments to determine best not only in terms drought resistance, but also productivity stress conditions with their further use breeding process. Methods. Research was conducted at Institute Irrigated Agriculture NAAS (now climate smart agriculture NAAS) during 2017–2020. object study 24 for use. Resistance genotypes carried out using various mathematical indices biplot analysis. Results. hydrothermal coefficient (HTC) 2017, 2018 2020 varied between 0.51 0.55, indicating very dry climatic conditions, while 2019 it 0.88, corresponding conditions. 11 were characterized by high yield (>400 kg/ha) stressful However, these populations, which formed highest range 445.5–472.1 kg/ha, A.–N. d. No. 15, Sin(c). / Prymorka M.g. CPU–11. According largest number (9), 15 Sin(s). Prymorka. Populations CP–11, stress, stood according four indices. population T. Emeraude population, one smallest reductions worse distinguished seven Correlations growing resistance analyzed. results GGE analysis, most drought–resistant Sin(s) population. A.–N.d. form a seeds both selection k.s. has low dramatically improves when are improved. Conclusions. promising identified divided into groups productivity.