Biometrical analysis of parents’ forms and hybrids F1 is accomplished; inheritance types of 8 of quantitative traits are established. A degree of domination and value of heterosis is determined. The paper presents data on the correlation dependence of the productivity of a single plant on the height of the plant and the average length of the internode. Dependence of productivity on plant height in different years and for different varieties is different, but mostly positive, on average, except for the shortest genotype for all years of research in which correlation to the productivity is practically absent. As for the feature - the average length of the internode - we should note the opposite dependence. The shorter the interstice, the higher is the productivity, even in the driest year.