STUDY OF HETEROSIS FOR GRAIN YIELD AND ITSCOMPONENTS TRAITS IN SINGLE CROSS DERIVATIVES OFMAIZE (ZEA MAYS L.)Indu, Amit Dadheech, R.B. Dubey, H.K. Jain, Devendra Jain and M.K. KaushikAbstract The 45 F1 hybrids obtained by crossing in line x tester fashion were evaluated in three different environmentsalong with parents and checks for grain yield traits and its component to harness the heterotic informationover better parent and standard check. the number of hybrids depicted significant positive heterobeltiosisand relative heterosis on pooled basis were 38 and 40 respectively, for grain yield per plant. The estimatesof standard heterosis for grain yield and its attributing traits showed that hybrid L14ÃT3 exhibited maximumestimates of significant positive standard heterosis suggesting that hybrid may be exploited beforecommercial release for confirmation of its superiority. |