Heterosis for seed, oil yield and quality of some different hybrids sunflower

Twenty-one hybrids of sunflower were produced by crossing 7 introduced cytoplasmic male sterile lines (CMS-lines) with 3 restorer (RF-lines) using line × tester mating design. The twenty-one hybrids, three restorers, seven maintainer (B-lines) evaluated. experiment was conducted in a randomized complete block design replications. Mean squares due to genotypes, parents (P), crosses (C), (L), testers (T), P vs. C, for stearic acid and palmitic acid. inbred their F 1 differed significantly mean values the traits under study. variances specific combining ability (SCA) higher than general (GCA) all studied traits, showing non-additive type gene action controlling traits. Non-additive can be utilized varietal improvement through heterosis breeding. Heterosis seed yield plant −1 positive highly significant relative both parental (17.68–72.38%) better parent (−2.86–56.842%). Significantly negative recorded case linoleic (−81.24 −38.02%) (−66.24–22.87%). With oleic acid, heterotic effect ranged from −14.18 39.59% (parental mean) −15.06 38.72% (better parent). Therefore, these results are valuable quantitative as well qualitative breeding material fulfill edible oil requirements.