Analysis of Fiber Quality Using Modern Technology in Cotton Seed Production

¹ Cotton Breeding, Seed Production, and Agrotechnologies Research Institute, Tashkent, Uzbekistan
² Tashkent branch of the Samarkand State Veterinary Medicine University of Animal Husbandry and Biotechnology, Samarkand, Uzbekistan

^* Corresponding author: komron.mirzoyubov91@mail.ru

Abstract

The quality of the fiber samples prepared for analysis in the laboratories of the elite seed production of cotton until recently using the LPS-4 equipment, which was put into production in the early 60s of the last century, about 300 test samples picked from the seed nursery in the second year, is three, that is, breaking strength g/force, metric number , relative breaking length, g/force/tex, and determination of fiber length, which is one of the main indicators of fiber quality, has long been carried out in laboratory conditions using methods that require a lot of manual labor (velvet board, special comb and rulers). In the course of the research, samples of the elite seed farm “S-8290” cotton variety, picked from the families of the second year seed nursery, were selected by analyzing the yarn spinning coefficient using the innovative technology of Uster HVI Spectrum. Our proposed method is effective not only in increasing work efficiency but also in ensuring genetic purity of cotton varieties. A 15-20% higher yield is possible in the production of genetically pure cotton plants. According to the results of the variational statistical analysis, the modal value of the yarn spinning coefficient of the family samples collected from the second year 2018 seed nurseries of the cotton variety “S-8290” was in the range of 153-155, while it was equal to 156-158 in the family collection samples collected in 2019. In this case, individual selection seeds from families selected for yield coefficient in the first year were planted for next year’s crop without any laboratory analysis. As it can be seen from the results of the analysis of the second year, the results of the selection work on the recommended yarn spin coefficient were confirmed by the preservation of the morphoeconomic characteristics of this variety.