The article presents the results of the productivity inheritance analysis from one plant by interspecific soybean hybrids of the first, second and third generations. The studies were carried out in the southern zone of the Amur region in 2018–2020 on the experimental field of the Far Eastern State Agrarian University. The study objects were interspecific soybean hybrids obtained by crossing the following initial cultivated soybean varieties – ♀Bonus, ♀Yubileinaya, ♀Heihe-1476, and wild soybean forms – ♂KZ-6337, ♂KA-1244, ♂KB-104. During the research period agrometeorological conditions were different in terms of precipitation and temperature regime in comparison with long-term values. Under laboratory conditions biometric and selection-genetic analysis of hybrids of the first, second and third generations were carried out. As a result of the research, it was found that in hybrids of the first generation, the productivity of one plant in the studied combinations did not exceed both parental forms. In hybrids of the second generation, according to the productivity of one plant, transgressive forms were revealed in the combinations of Bonus×KZ-6337 and Yubileinaya×KB-104. The hybrid plants exceeded the parental forms by 20.2 % in the Bonus×KZ-6337 combination. 57.1 % of the hybrids exceeded the parental forms by 10 % according to the productivity of one plant in the Yubileinaya×KB-104 combination. In hybrid plants of the third generation, according to this trait, positive transgressions were noted only in the Bonus×KZ-6337 combination, and the frequency of transgression manifestations increased from 63.2 to 73.0 % compared to the second generation.

Minkach Tatyana V., Oborskaya Yuliya V.

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