RESULTS OF BREEDING WORK ON MEDIUM-FIBER COTTON IN A COLLECTION NURSERY

Abstract

The article provides information on the results of screening a collection of cotton breeding varieties according to the main economically valuable traits: early maturity, a significant mass of raw material from one pod, high productivity, increased fiber yield and its technological quality. The material for the study was the world collection of domestic and foreign breeding cottоn varieties of the Institute of Farming of the ТAAS. The study was carried out according to the methodology developed at the VNIISS named after Zaitseva G.S. According to the obtained data on early maturity from the number of studied samples of the selection variety: the USA - K-08589 (117 days), K-5763 (118 days) and Turkey - DPL-5816 (119 days), differed in the shortest growing season and 7-11 days earlier than the standard (126 days) Hisor.By productivity components – the number of full-fledged bolls per plant and their weight, the duration of the growing season and the yield of raw cotton.For all the studied collections, the mass of the raw material of one box was in the range – from 5,6-6,8 g. At the same time, 7 varieties differed with the maximum masses (6,0-6,4 g). For all the studied collections, the deviation relative to the Hisor standard (5,6 g) was 0,1–1,2 g.