INFLUENCE OF WEATHER CONDITIONS ON THE FORMATION OF ECONOMICALLY VALUABLE TRAITS IN SOYBEAN VARIETIES OF DIFFERENT BREEDING
2022
Golovina, E.V. | Leukhina, O.V. | Leukhina, T.V.
In 2020-2021 in the field experiment were investigated economically valuable features of 6 varieties of domestic (Leader 1, L-10, L-171) and foreign (Amadeus, Asuka, Nordica) breeding. The aim of research was to study the effect of weather conditions in the Orel region on the productivity of soybean varieties. In the phase R8 (full ripeness), plant samples were taken for biometric analysis. Varieties were divided into the following groups according to their response to different moisture supply during the generative period: 1. Asuka, Leader 1 and line L-171 form a high yield of grain in conditions of high moisture at the beginning of the generative period and low moisture at the end of it and sharply reduce yields when there is a lack of moisture in the early generative period and when there is an excess of moisture in the second half of the growing season; 2. Amadeus is neutral to changes in moisture availability during the growing season and most stable in productivity; 3. Nordica and L-10 line respond positively to high moisture supply in the second half of the growing season. Line L-171 is characterized by high productivity potential, forming in favorable conditions up to 33 grams of grain per plant, but is not resistant to changing weather conditions, reducing the yield by more than 3 times with excess moisture during the filling and ripening of grain. The variety Nordica stood out for its root length of 20.8 cm, stem 110.1 cm and its weight of 10.5 g, as well as for such a technologically important trait as the distance to 1 bean (21.0 cm) and the highest coefficient of microdistribution 71.9%.
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