The influence of crop structure elements on the seed productivity of soybean collection samples

Relevance. An integral part in the creation of new varieties is the study of the elements of the crop structure of collection samples, and the determination of their impact on yield will allow the inclusion of samples with their optimal ratio in the breeding process.Methods. The research was carried out in the fields of the “Donskoy” Research Center in 2019–2021 in accordance with the Methodology of the State Variety Testing (2019) and the Methodology of Field Experience (2012). The objects of research are 85 soybean samples from the world collection of the N.I. Vavilov All-Russian Institute of Plant Genetic Resources (VIGRR) of domestic and foreign breeding.Results. The most productive were samples with plant height 55–70 cm, attachment height of the lower bean 16–17 cm and 20–21 cm, number of branches 1.0–1.5 pcs/rast, number of beans 30–35 pcs/rast, number of seeds 65–70 pcs/rast, weight of 1000 seeds 140–150 g and 190–200 g, weight of seeds from a plant 11–12 g, period vegetation period is 112–114 days, protein content is 39.0–39.5%, fat content is 21.0–21.5%.