Study of some economically valuable characteristics of genotypes of cotton that was selected by photosynthetic test signs in combination with classical selection methods

Abstract

The article discusses the main results of research on the study of 28 cotton genotypes obtained from crossing ecological and geographical distant parental forms based on the principle, a set of economically useful traits. According to the obtained data, introgressive hybrids were characterized by more early ripening, yield and fiber yield in comparison with the zoned Khisor variety, which was used as a standard. It was established that the highest yielding genotypes differed: ALC-86/6 x Dusti-IZ, Cocer-4104 x Sorbon, Cocer-4104 x Ziroatkor-64, Cocer-4104 x Dekhkon, NAD-53 x Ziroatkor-64, NAD-53 x Dusti-IZ, NAD-53 x Dehkon, DP-4025 x Ziroatkor-64, DP-4025 x Dehkon, NAK-99/1 x Ziroatkor-64, which have a total yield of 90.0-100.0 g/plant, and prefrost 64.5-71.3 g/plant, which significantly exceeds the standard Khisor variety (by 45.8-55.8 g/plant and 31.3-38.1 g/plant). The same pattern also manifests itself in the yield of fiber combinations: Cocer-4104 x Sorbon (44.0%), Cocer-4104 x Dehkon (44.0%), NAD-53 x Dusty-IZ (44.0%), Nazilli-84-S x Dehkon (44.0%), AC-4 x Dusti-IZ (43.8%), Nazilli-84-S x Ziroatkor-64 (43.5%) and NAD-53 x Ziroatkor-64 (43.1%), outstand with more significant indicators (by 7.9-8.8%.), relatively to the zoned Khisor cultivar.