Formation of production characters of soya genotypes [Glycine max (L.) Merr.] in the areas of south-east Kazakhstan with sufficient and limited water supply

Svetlana Didorenko, Raushan Yerzhebayeva, Dzuldyz Abidlaeva, Aigul Amangeldiyeva


Moisture stress is a major environmental factor that limits the soy (Glycine max (L.) Merr.) yield worldwide. Nowadays, development in soybean breeding is mainly aimed at determining genotypes with a high seed production level, considered as a marker of drought resistance. This study aimed to evaluate production characters of 98 varieties and collection samples of soy in the fields of the Almaty region of the Republic of Kazakhstan with and without irrigation. The authors used a combination of features – weight of seeds from a plot, weight of 1,000 seeds, and seed plumpness – as the main markers for drought resistance assessment. Based on a comprehensive assessment of the working collection, soybean genotypes with high drought resistance were identified: maturity group 00 – Krasivaya mechta (Russia), maturity group 0 – Ustya (Ukraine), Spritna (Ukraine), maturity group I – Ji-ti 4 (China), maturity group II – Bukuria (Moldova), Zhansaya, Hybrid 670, (Kazakhstan), Vilana (Russia), Zen (Switzerland), Skytnea (Moldova), maturity group III – Sponsor (France), Nin zhen No. 1 (China), Sousei (Japan), maturity group IV – Fuji No. 4 (Japan), KSHI 713 (Moldova), Kaigen Shirobana (China), Shiheigo Kuroheso (Japan), 5695 (China), Hakuchuta (North Korea), 6575 (China), Hakka zashi (Japan). These genotypes are useful genetic material for soy breeding programs with the aim of increasing yields and drought resistance. Varieties of the maturity group 00 can be cultivated in the Almaty region without irrigation, since they avoid moisture stress by shortening the vegetation period. These samples can also be recommended for cultivation in non-irrigared areas of Eastern and Northern Kazakhstan. The highest productivity potential in the Almaty region was found in varieties of the maturity group II. However, their cultivation without irrigation will lead to a maximum decrease in yield


collection, crop yield, drought resistance, irrigation, non-irrigated agriculture

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