INHERITANCE OF THE MAIN ECONOMICALLY IMPORTAMT TRAITS BY F1 HYBRIDS OF SPRING RAPESEED (Brassica napus L.)

The article presents data on the manifestation of heterosis in experimental hybrids of the first generation of spring rapeseed (Brassica napus L.) on the main economically important traits in the conditions of the central zone of the Krasnodar region. The true and competitive heterosis and the degree of phenotypic dominance in five promising hybrids of spring rapeseed were determined. A high effect of true heterosis (93.5 %) and competitive heterosis (13.7 %) by seed yield was observed. In the control nursery, hybrid combinations ML-3TA × YARK-1PS4 and ML-6GA × YARK-1PS4 showed high indicators of both true and competitive heterosis, as well as overdominance in yield and oil yield per 1 ha. In terms of oil content of seeds, the selected combinations showed intermediate inheritance and positive overdominance of the trait.