Efficiency of navmutant lines in the creation of cotton (g. hirsutum l.) varieties

¹ Grain and legume research institute Bukhara scientific experimental station, Bukhara district., 200407 Bukhara, Uzbekistan
² Bukhara State University, Muhammad Iqbol str., 11, 705018 Bukhara, Uzbekistan

^* Corresponding author: o.b.sharipov@buxdu.uz

Abstract

According to the article, new promising families and lines of cotton that are resistant to unfavorable climatic conditions have been created. The cotton is fruitful, quick-growing, and has high fiber quality. The study was based on the variability and heredity of the main morphoeconomic characters in the hybrid generations obtained between cotton varieties with promising lines of cotton. We investigated the L-203 K line, SML-3882, SML-5531, SML-4042 mutant variety lines, the Bukhara-6 cotton variety, and the connections between the L-203 K line and mutant variety lines in our research. In reciprocal hybrids, the inheritance and variability of features were examined. In the breeding procedure, the maternal form's fully grown flower buds were taken out and the maternal flowers got fertilized the following day after the male pollen grains had reached maturity. The system developed by S. Wright and published in the publications of G. V. Beil and others was employed to determine the degree of character dominance in hybrids of the first syllable. Heritability and variability of traits were studied by comparison with parental samples in the reciprocal hybrids obtained through cross-breeding, including plant height, height of the first harvest branch, time from sowing to flowering, ripening speed, fiber yield, fiber length, cotton weight per boll, number of bolls per plant, etc. Many new families and ridges that were well suited to the soil and climate of the Bukhara region were separated. These families and ridges had high yields, excellent fiber quality, and yields. After extensive breeding over many years, a new cotton variety called "Zhondor Qudrati 1" was produced.