The present investigation on okra comprised of a half-diallel set of eight parents including standard check GAO 5 and their 28 crosses. The components of genetic variance and graphical analysis were studied for twelve characters viz., fruit yield per plant, days to 50% flowering, first fruiting node, days to first picking, fruit length, fruit girth, fruit weight, number of fruits per plant, plant height, number of nodes per plant, number of primary branches per plant and moisture content. The analysis revealed importance of both additive and non-additive genetic variance for inheritance of these traits. Degree of dominance manifested over dominance for fruit yield per plant, fruit girth and primary branches per plant. Asymmetrical distribution of positive and negative alleles and unequal distribution of dominant and recessive genes found in parents for these traits. The graphical analysis indicated that all the traits controlled by either over or partial dominance. The parents had greater diversity as their array points scattered throughout the graph for the traits like fruit yield, fruit weight, number of fruits per plant, number of nodes per plant, number of primary branches per plant and moisture content.
Genetic variance, half-diallel, heterosis, okra, over dominance, partial dominance
