Evaluation of selected soft winter wheat lines for main ear grain weight
¹Bila Tserkva National Agrarian University, Department of Genetics, Breeding and Seed production, Sq. Soborna 8/1, UA09100, Bila Tserkva, Ukraine
²Bila Tserkva National Agrarian University, Department of Technologies in Plant Growing and Plant Protection, Sq. Soborna 8/1, UA09100, Bila Tserkva, Ukraine
³Bila Tserkva National Agrarian University, Department of Forestry, Botany and Plant Physiology, Sq. Soborna 8/1, UA09100, Bila Tserkva, Ukraine
Studies to assess the breeding samples of soft winter wheat by weight of grain from the main ear and determine the indicators of adaptability were conducted at the Bila Tserkva Research and Selection Station (BTRSS) in 2011–2013. The study revealed significant differences in breeding lines in the range of variability of grain mass from the main ear and identified small, medium and significant coefficients of variation, which indicates their excellent response to environmental conditions. It was due to genotype, year conditions and their interaction. Line 42 KS had significantly higher than the standard grain weight of the main ear (0.14 g) and the lowest value of the coefficient of variation (8.7%). According to the indicators of adaptability (GAC, σ²(GxE)gi, σ²SACi, σSACi, etc.) the lines 42 KS, 24 KS and 44 KS were distinguished. There was a significant correlation between the weight of grain from the ear and the weight of 1,000 grains (0.603–0.674) and the direct influence of the weight of grain from the main ear on the weight of grain from the plant and grain yield (0.805–0.942). Selected lines as a result of research (2015–2020) from these populations of soft winter wheat are competitively tested in the conditions of Bila Tserkva Research and Selection Station, forming high grain yields (7.39–8.12 t ha-1) and will be transferred to 2021 for the State variety test for inclusion in the Register of plant varieties suitable for distribution in Ukraine.