Genetic Studied of Heterosis and Heterobeltiosis in F1 Hybrids of Upland Cotton for Yield and Fibre Traits

The mean performance of parents and hybrids is highly significant for all the traits. The hybridsMNH-886 x BT-703 possess maximum numbers of bolls formed 90 days after planting, plant height andthe number of sympodial branches/plant, while CRIS-134 x MS-370 produced a maximum number ofbolls/plant. Moreover, the high ginning out turn % and seed yield/plant were reported by the cross ofBT-703 x MS-370. The cross MNH-886 x IR-1524 gave the highest seed index with the longest staplelength. The cross MNH-886 x BT-703 for bolls formed at 90 days after planting, plant height, sympodialbranches/plants, number of bolls/plant, seed index and seed cotton yield/plant, while CRIS-134 x IR-1524high relative heterosis and heterobeltosis boll weight; BT-703 x MS-370 and expressed highest ginningout turn%, MNH-886 x IR-1524 can be utilized for the future breeding program for important yieldcontributing traits.