Evaluation of adaptability indicators of grain sorghum on the sign “weight of 1000 grains” in the conditions of Donbass

The purpose of the research was to evaluate samples of grain sorghum of different ecological and geographical origin for adaptability to drought and contrasting weather conditions of Donbass by the indicator "weight of 1000 grains". Field experiments were conducted in the central part of the Lugansk People's Republic during 2016-2021 in the experimental field of the Federal State Budgetary Educational Institution of Higher Education "Lugansk State Agrarian University named after K.E. Voroshilov". Ecological tests were conducted with 20 modern, recommended for cultivation grain sorghum hybrids of companies "RICHARDSON seed" (USA), "RAGT semences" (France), "EURALIS semences" (France), "PEONEER" (Austria), "ADVANTA" India). The most intensive samples (regression coefficient bi > 1) were Keiras, Fulgus, Yankee, Friskett, Eclipse; the highly plastic samples (bi ≈ 1) were Solarius, Oggana, Brigga, Targgo, Puma Star, Bounty, Cosmosol, PR88Y20; the most extensive samples (bi