Features of the dynamics of the passage of growth and development of varieties of medium-fiber cotton
The article presents theoretical justifications and practical results on the study of a collection of new varieties of parent pairs of medium-fiber cotton for hybridization. Consequently, all parent varieties differed in the passage of the main phases of development, by the end of the growing season, all studied gene pools had a large number of boxes per plant.The height of plants on average on August 1 (2019-2021) for local selection reached - from 75,0 to 80,6 cm, for foreign ones - 67,3-83,3 cm. The number of boxes for September 1, 2019-2021 of our studies, the average for local varieties was from 14,3-15,9 pcs./plant, and for foreign ones - 13,9-15,7 pcs./plant. Significant indicators stood out 5 foreign - ALC-86/6, Cocer-4104, DP-4025, NAD-53, NAK-99/1 and 2 local - Dusti-IZ, Ziroatkor-64, which are attached to be used in further breeding studies, as valuable donors with a complex of economically useful features.