The experiment was conducted at college of Agriculture, Vijayapur to study heterotic performance of 40 sunflower hybrids over the checks (Standard heterosis) during kharif2018. The experiment consisted of 8 testers and 5 lines used in line x tester fashion to produce 40 hybrid combinations. These 40 hybrid combinations were studied for heterosis performance over two checks KBSH-53 and Cauvery Champ respectively. All the hybrid combinations showed negative heterosis for days to 50 % flowering over checks indicating earliness over both the checks. Among them The crosses CMS 7-1-1 A × DSR-37 and CMS-1030A × DSR-13 exhibited highest negative values of -25 per cent over KBSH-53 and -28 percent over cauvery champ. Similarly for plant height, all the combinations shown positive heterosis indicating tallness dominant over checks used. The crosses CMS 7-1-1 A ×DSR-37 and CMS-853A × DSR-19 recorded highest positive heterosis of percent heterosis over KBSH-53 and heterosis percent over cauvery champ with respect to yield (kg ha-1 ). Similarly the cross CMS-853A ×DSR-19 exhibited maximum heterotic per cent of 22 and 25 percent over KBSH-53 and cauvery champ respectively for oil content. | Heterotic studies on yield and its component traits in sunflower hybrids
