Genetic analysis of yield and yield components in okra (Abelmoschus esculentus L. Moench)

Abstract

An investigation was carried out, to estimate heterosis, heritability, genetic advance, gene action, gene action and study the incidences of YVMV in okra. Among the F1 hybrids evaluated, P7 X BO-13 exhibited an appreciable amount of heterotic effect or hybrid vigor for most of the yield contributing characters viz., total yield per plant, marketable yield per plant, fruit weight, number of fruits per plant, fruit length and fruit girth. The same hybrid also exhibited heterosis effect on earliness, days to first fruiting and days to first picking. The heritability and genetic advance as percent mean ranged from 1.0% (days to 50% flowering) to 87.06% (days to flowering) and 107% number of branches per plant in the cross Arka Anamika x BO-13. The F1 hybrid Arka Anamika x BO-13 most of the traits were under the influences of both additive and non- additive gene action. In order to use of these both gene action reciprocal recurrent selections would be beneficial. The other F1 hybrids Parbhani Kranti X VRO-6 and P. Kranti x BO-13 much of the yield contributing traits were under the influences of dominant gene action where the hybrid vigor was exhibited. The incidence of yellow vein mosaic virus disease was found to be very low in BO-13 (0%) and VRO-6 (3.33%) among the parents. Among the hybrids. Arka Anamika x BO-13, P. Kranti X BO-13 and P7 x BO-13 were found to be resistant to YVMV under field condition.