The effect of heterosis and a combining ability of sunflower lines of confectionery type

Nine CMS-lines of sunflower and 20 lines-restorers of fertility were studied in the test-crossing scheme. Combinations with a high effect of heterosis for yield and 1000 seeds weight were identified in sunflower hybrids. The necessary parameters of the index of 1000 seeds weight among the lines both of female and male forms in F1 hybrids of confectionery sunflower were determined. High effects of a common combining ability for yield and 1000 seeds weight were identified in large-seeded sunflower lines. Lines Cx 51 A, Cx 52 A, KP 11 A and X 736 B, X 279 B were recommended for use in heterosis breeding of confectionery sunflower according to the research.