ASSESSMENT OF DROUGHT RESISTANCE OF SOYBEAN VARIETY SAMPLES DURING SEED GERMINATION UNDER OSMOTIC STRESS CONDITIONS

• Tangirova Gulchekhra Nasridinovna

  Doctor of Agricultural Sciences (DSc), Associate Professor

  Author

• Khairidinova Ranokhon Kakhramon qizi

  Doctoral Student, Department of Genetics, Breeding and Seed Production

  Author

• Ismanova Aziza Shirmurod qizi

  1st-Year Student, “Breeding and Seed Production”

  Author

• Baltabayeva Sholpan Seitmurat qizi

  1st-Year Student, “Breeding and Seed Production”

  Author

• Kurbonov Farxod Turgunboyevich

  Independent Researcher

  Author

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.

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