Formation of yield elements in composite hybrid families of cotton

¹ Tashkent State Agrarian University, University str., 2, 100140, Tashkent, Uzbekistan
² Uzbek Scientific Research Institute of Cotton Breeding and Seed Production, Tashkent, Uzbekistan

^* Corresponding author: g.xolmurodova@tdau.uz

Abstract

A report on the execution of the 2019–2021 strategic plans and their control was presented at the ICAC international organization's annual report conference on October 1, 2020. Also, it was reported that the output capacity of these businesses and factories plummeted by 75% in nations like Vietnam, Bangladesh, and India. The global climate change, the emergence of new races of disease-causing agents and the numerous damages caused by harmful insects indicates the need to create new varieties of cotton that are resistant to adverse factors. The use of the O-3406, O-3407, O-3398, O-3411 and O-2757 families and the created T-3377, T-3378, T-3379 lines based on composite hybridization to achieve positive results in the process of creating especially productive varieties. efficiency is highlighted. The obtained results were subjected to statistical analysis according to the Dospekhov method. The results showed that from the families obtained on the basis of double hybridization, O-31 (F4 Tashkent-6 x Bukhara-6) had a relatively high result, which was 24.8 units. In the rest of the families in this block, it was noted that the indicator according to the sign was from 22.8 units to 24.10 units.