MORPHOLOGICAL TRAIT FORMATION IN F2, F3 HYBRIDS AND BACKCROSS HYBRIDS F2B1 AND F3B1 OBTAINED WITH COTTON VARIETIES BASED ON WILD AND REDOLENT FORMS.

Under conditions of global warming in creating early maturing competitive varieties of cotton, resistant to diseases and stress factors, as well as with high fiber yield and quality, it is expedient to select initial forms, use them in various hybridization methods, study inheritance and variability of traits in hybrid generations, and create breeding material with valuable traits. In the article formation of morphoeconomic traits in cotton hybrids obtained by using intervarietal and interlinear crossing on the basis of wild and ruderal forms, as well as with the participation of American selection varieties are determined. In the biological nursery in hybrids F2, F3 and backcross hybrids F2B1 and F3B1 selection for separating families with a complex of economically valuable characters was conducted. Using cultivars Gulistan and C-5707 obtained by using wild and ruderal forms and geographically distant forms with cultivars and lines of the laboratory, families F3Guliston х C-8292, F3 (F3C-8290 х Guliston) õ Guliston and F3L-45 х Guliston were formed which possess early maturing, high yielding, resistant to wilt and high quality of fiber. These hybrid families had high early maturity, large boll size, 1000 seed size and high fibre quality than the standard variety C-6524. In the breeding nursery by checking the economically valuable characters of offspring and proper conduct of selection in hybrid families allow to obtain valuable breeding materials Proceeding from the above mentioned, as a result of continuation of selection process in hybrid families F3 and F3B1 studied it is possible to create early maturing, productive lines with high economically valuable traits.