INHERITANCE OF THE “PLANT SHAPE” TRAIT OF THE VARIETIES AND INTROGRESSIVE LINES OF G. hirsutum L. IN DROUGHT CONDITIONS
N. N. SANAEV
Institute of Genetics and Plants Experimental Biology, Academy of Sciences of Uzbekistan, Tashkent Region, Kibray District, Yukori-Yuz, Uzbekistan
N. G. GURBANOVA
Institute of Genetics and Plants Experimental Biology, Academy of Sciences of Uzbekistan, Tashkent Region, Kibray District, Yukori-Yuz, Uzbekistan
А. А. AZIMOV
Institute of Genetics and Plants Experimental Biology, Academy of Sciences of Uzbekistan, Tashkent Region, Kibray District, Yukori-Yuz, Uzbekistan
Т. N. NORBERDIEV
Institute of Genetics and Plants Experimental Biology, Academy of Sciences of Uzbekistan, Tashkent Region, Kibray District, Yukori-Yuz, Uzbekistan
SHAVKIEV J. SH *
Institute of Genetics and Plants Experimental Biology, Academy of Sciences of Uzbekistan, Tashkent Region, Kibray District, Yukori-Yuz, Uzbekistan
*Author to whom correspondence should be addressed.
Abstract
The article presents inheritance of the traits in Ғ1 and Ғ2 hybrids such as main stem height, number of sympodial branches, number of bolls, the yield per plant, drought-resistance index and “plant shape” trait of the plants that are differentiated by branched, cone-shaped and cylindrical shapes in 6 introgressive lines obtained on the basis of interspecific hybridization of G. hirsutum L. species and the varieties Armugon-2, Navbahor-2 in artificial drought conditions and the analysis of their genotypic formation. According to genetic analyses, “plant shape” trait is inherited through 4 unrelated genes (S-s; S1-s1; S2-s2; S3-s3) in the polymer state. As a result, it was found that in drought conditions, the forms of cotton that are cone-shaped and have type I sympodial branches of a compact branching, can be resistant and more productive than other forms of cotton. The line L-8 with such traits and characteristics was found to be related to genotype Sss1s1s2s2s3s3.
Keywords: Cotton, variety, line, inheritance, interspecific, hybridization, drought, resistance