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

Genetic Study of F1 Hybrids in Cotton

Abstract

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