Biliavska, L. H.Prysiazhniuk, O. I.Diyanova, A. O.Білявська, Людмила Григорівна2022-12-092022-12-092022-11https://dspace.pdau.edu.ua/handle/123456789/13532Improve the model of very early ripening soybean variety and determine the peculiarities of the influence of the cultivation conditions on the formation of the major components of its productivity. Methods. Field, laboratory, mathematical and statistical. Results. The graphic model of productivity of the studied varieties was constructed. It is proved that the characteristics of the productivity are due to the biological peculiarities of a particular variety. It was found that the variability of a trait is defined as the reaction of the genotype to the changing conditions of cultivation and weather conditions of the year. It is shown that among the factors of aggregate influence, the resulting trait is characterized by a stable high impact on the trait to be resulting in the next module. The inverse correlation between the branches in plants and plant height (r = -0.11) and nodes on the main stem (r = -0.20) was determined. A positive correlation between height of plants and the number of nodes on the main stem (r = 0.26) and the attachment height of the lower bean (r = 0.49) was established. The number of nodes on the main stem positively correlated with the number of beans (r = 0.16). The number of seeds per plant positively and closely correlated with the weight of seed (r = 0.94). Conclusions. The height of plants is significantly affected by rainfall (r = 0.60) and air humidity (r = 0.65). A moderate positive correlation between the height of lower bean attachment and precipitation (r = 0.31) and weak with air humidity (r = 0.11) was determined. An inverse correlation between the number of branches per plant and air temperature (r = -0.51) and precipitation (r = -0.25) was established. The number of nodes on the main stem positively correlated with precipitation (r = 0.28), air temperature (r = 0.16), and humidity (r = 0.12). A correlation between the number of beans on plants and air temperature (r = -0.43) between the beans was found. Number of seeds per plant negatively correlated with air temperature (r = -0.33) and precipitation (r = 50.25), and correlated positively with humidity (r = 0.12). Air temperature and rainfall affects greatly the weight of seeds (r = -0.24, and r = -0.16, respectively). The formation of 1000-seed weight is positively affected by the air temperature (r = 0.18) and rainfall (r = 0.19).SOYBEAN, MODEL OF SOYBEAN, VARIETY, FOR FOREST-STEPPE, CONDITIONS, OF UKRAINEBook chapter