ASSESSMENT OF DROUGHT RESISTANCE OF SOYBEAN VARIETY SAMPLES DURING SEED GERMINATION UNDER OSMOTIC STRESS CONDITIONS
Keywords:
Soybean, drought resistance, osmotic stress, seed germination, sucrose solution, early stages of ontogenesis.Abstract
The article presents the results of a laboratory evaluation of drought resistance in soybean (Glycine max (L.) Merr.) variety samples at the early stages of ontogenesis under simulated water deficit conditions induced by osmotic stress. The study was conducted on 23 soybean variety samples of different ecological-geographical and breeding origins (South Korea, Uzbekistan, and the Russian Federation).
Drought resistance was assessed based on seed germination rates during germination in a sucrose solution with high osmotic pressure. A pronounced inter-varietal variability in seed response to osmotic stress was established.
Based on the obtained data, the variety samples were classified into groups according to their level of drought resistance. Genotypes with high germination retention were identified, representing practical value for use in breeding programs aimed at developing drought-resistant soybean varieties.
