Abstract
Relevance. Currently, the study of the interaction of these traits with each other is a very important task of breeding. In the work, 15 varieties of grain sorghum were studied, differing in morphological parameters, growing season, degree of grain ripening, biochemical composition and yield of grain and green mass. The purpose of the study is to study the interaction of environmental conditions on the yield and biochemical composition of sorghum grain and to assess the significance of these relationships.Methods. The studies were conducted in 2020, 2021 and 2022. The years of research differed in meteorological conditions (hydrothermal Selyaninov coefficient (SCC) was 0.56–0.76). To assess the biochemical composition in sorghum grain, the spectroscopy method was used using an infrared analyzer Spectra Star XT. The grain yield was determined according to the generally accepted method. Results. The experimental results were processed using the “Agros 2.09” software package by the method of correlation analysis. Based on the results of three years of research, a correlation was established between biochemical composition and the meteorological conditions of the year (sum of temperatures, total precipitation, SCC), as well as a significant effect of these traits on the yield of sorghum grain.
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