PERFORMANCE OF SELECTION BY TEST-SIGNS USING METHODS CLASSICAL SELECTION

Abstract

This article discusses the issue of improving the methods of cotton breeding due to the possibility of using physiological and photosynthetic indicators of plants in the process of breeding experiments. According to the research data, the study of cotton genotypes and their screening by test signs are effective and this method helps to obtain samples with significant indicators of the main signs of productivity.Thus, a significant variation of the studied samples was found for a number of economically valuable signs (precocity, the number of full-fledged boxes on the plant, the mass of raw cotton of one box). The productivity of raw cotton for the selected precocious genotypes ranges from 90.0 ±5.2 to 132.0±2.4 g/plant.Samples with various economically valuable characteristics, promising for use in the breeding process, were selected