Definition of Performance Determinants in Spring Barley by Path Analysis

Abstract

Ambiguous results of pairwise correlation analyses and pathway analyses were obtained from different researchers. Therefore, the study of the correlation of traits and conducting a road analysis of the productivity of new genotypes using different sets of traits is relevant. The purpose of this study was to establish the correlation coefficients between the characteristics of spring barley, their direct and side effects on plant productivity, and to identify the determinants of plant selection. The research used the correlation method to determine the correlation coefficients between traits, and the method of path analysis – to establish the direct and side effects of traits on plant productivity. The positive analysis of plant productivity in the variant using quantitative traits without components of productivity revealed positive direct effects in the action on productivity and positive correlation with it traits productive bushiness as determinants of forecasting the effectiveness of high-yielding plants. In the variant using plant productivity and traits of the mass of grain from the main ear and afterspring, the path analysis found that only these two traits had a considerable direct and indirect effect in interaction with other traits on plant productivity, as well as average and high (respectively) correlation with it. Therefore, in the case of determining the mass of grain from the main ear or from the afterspring, these two separate features can also be used as determinants of the forecast of the efficiency of selection of high-yielding plants