Study of combining ability analysis and gene action in sunflower (Helianthus annuus L.)

Abstract

The current study was conducted from Kharif 2016 to 2018 at the Oilseed Research Station in Latur, Maharashtra. Six lines and six restorers make up the experimental material. These were crossed in a Line x Tester method to create 36 hybrids. In Kharif 2018, at the Oilseeds Research Station in Latur, the entire collection of experimental material consisting of 50 genotypes six CMS lines, six restorers, thirty-six hybrids, and two standard checks was sown in a Randomised Block Design with two replications. The morphological observations on ten quantitative parameters were recorded: hull content (%), seed yield per plant (g), days to 50% flowering, days to maturity, plant height (cm), head diameter (cm), seed feeling (%), 100-seed weight (g), volume weight (g100/ml), and oil content (%).The lines CMS249A and CMS-2A and CMS-234A were found to be good general combiners for seed yield per plant and oil content percentage, respectively. SCG-04 and EC-601951 were two of the testers that performed well overall for seed output per plant. Hetrosis breeding should be encouraged because the majority of crossings had strong positive sca effects for numerous traits, showing a preponderance of non-additive gene activity.