CREATION OF BREEDING MATERIALS WITH HIGH FIBER QUALITY INDICATORS IN THE SELECTION OF COTTON VARIETIES BELONGING TO G. HIRSUTUM L.

Abstract

The study evaluated fiber quality traits of promising cotton breeding lines (T-340, T-160, T-176-191, T-165-179) compared with the standard variety Andijan-36 (2023). The new lines showed superiority over the standard in fiber strength (30.4–31.8 g/tex vs. 28.1 g/tex), fiber length (1.24–1.30 in vs. 1.23 in), uniformity (87.2–88.5% vs. 86.4%), and spinning consistency index (164–170 vs. 163). The most notable advantages were observed in T-340 and T-160 for strength, T-160 for length and SCI, T-176-191 for uniformity and short fiber performance, and T-340 for elongation and maturity. These lines are considered promising genetic sources for further breeding aimed at improving fiber quality.