ADAPTABILITY AND SELECTION VALUE OF SOYBEAN VARIETIES FOR GROWING IN DIFFERENT SOIL AND CLIMATE CONDITIONS OF UKRAINE

Abstract

Our research purpose is to evaluate the genotypes potential and soybeans selection from the standpoint of the potential of ontogenetic adaptation, taking into account the complex of their economically valuable personalities and properties, as well as with a positive reaction to the improvement of growing conditions. Varieties have been differentiated according to the level of ecological potential according to their reaction to growing conditions in different soil and climatic conditions of research. Evaluation and distribution of the value of plasticity and stability have enablrd identification of ecologically adapted genotypes by the yield, the duration of the growing season. The varieties Adamos, Alexandrite and Aquamarine were highly plastic in terms of yield, weight of 1000 seeds, and length of the growing season. Diamond, Anthracite, and Aventurine varieties were more conservative in their response to changing environmental conditions. Genotypes with relatively high yield stability (homeostaticity) are important in terms of selection value. The coefficient of stability from the agronomic point of view (As) characterizes the economic value of the source material: according to this, the most valuable for production are varieties in which the coefficient of stability exceeds 70%.All varieties according to this criterion belong to the stable, this is confirmed by a similar sequence of distribution of varieties by homeostatic (Hom), however, the highest were the varieties Aventurine and Diamond - 0.2. The highest yield in different soil and climatic conditions are provided by soybean varieties: Alexandrite - 2.3 t / ha; Aventurine - 2.4 t / ha, Aquamarine - 2.3 t / ha and Diamond - 2.4 t / ha.