G‘O‘ZANING GOSSYPIUM BARBADENSE L. TURIGA MANSUB INGICHKA TOLALI “ITPITI-1” NAVINING BIRLAMCHI URUG‘CHILIGINI TASHKIL ETISH VA TAKOMILLASHTIRISH

Abstract

This scientific article presents the results of research on the organization and improvement of primary seed production of the fine-fiber cotton variety “ITPITI-1” belonging to the species Gossypium barbadense L. Field experiments were conducted under typical agricultural conditions, including threestage field inspections during the growing season. Special attention was given to the preservation of varietal purity, morphological characteristics, resistance to pests and diseases, productivity, and maturity period.

The results demonstrated that in the first-year seed nursery, 17,6 % of 323 plant families were discarded based on strict selection criteria. The main reasons for rejection included deviations from varietal traits, poor agronomic performance, low yield, and late maturity. As a result, only the best-performing plants were selected, ensuring high genetic purity. By the end of the season, a total of 2550 kg of highgeneration seed cotton was produced.

In the seed multiplication nursery, the rejection rate did not exceed 2 %, confirming the high genetic stability and uniformity of the variety. The findings indicate that “ITPITI-1” is a high-yielding, stable, and promising cotton variety. Proper organization of its primary seed production system plays a crucial role in producing high-quality raw cotton and improving the efficiency of the cotton industry.