Circularity of spring wheat grain as a critical characteristic of its quality indicators

The purpose of the study is to identify the conjugate relationship between the shape of the grain and its quality indicators (gluten content, gluten deformation index and glassiness) and evaluate it using statistical methods. The study used experimental material to assess the qualitative characteristics of various varieties of durum and soft wheat grown in the sharply continental climate of the central zone. In order to determine the quality of grain, three indicators were selected: gluten content, %; gluten deformation index (GDI), cu; glassiness of grain, %. Dimensional characteristics include data on the length and width of the grain, which are combined into a general indicator - circularity. In order to process experimental data, systematize indicators, identify relationships, determine dependencies, and calculate the values of linear coefficients, the Statistica 12.0 application package was used. When analyzing the circularity of grain in a va¬rietal context, it was found that it varies little depending on specific varieties of wheat. To carry out the assessment, in order to identify relationships, the Pearson correlation coefficient was used, and the least squares method was used to detect regression dependencies. Regression equations are compiled for each of the quality indicators depending on the grain circularity indicator. The analysis showed a connection between grain quality indicators (gluten content, GDI and glassiness) and an indicator of grain shape - circularity. The compiled linear regression equations for each of the specific quality indicators make it possible to predict the gluten content, GDI and grain glassiness depending on the grain shape