Usefull heterosis for yield and its components in okra [Abelmoschus esculentus (L.) Moench]

The experiment was conducted of 36 F₁s developed through line x tester technique along with 15 parents in randomized block design with three replications at the Department of Vegetable Science, C.S.A. Uni. of Agric. and Technology, Kalyanpur, Kanpur during Kharif 2005, The heterosis in F₁ lover economic parent (KS-404) for twelve characters viz., days to flowering, height of plant (cm), number of branches per plant, number of first fruiting node, length of first fruiting node (cm), number of node per plant, length of inter node (cm), length of fruit (cm), width of fruit (cm), Tapering length of fruit (cm), number of fruits per plant and yield per plant (g), The significant amount of useful heterosis was observed for all the attributes, However the maximum heterosis with the respect to yield per plant was observed in cross KS-455 x Prabhani Kranti (36.85%), Significant and desirable heterosis was also reported for all the characters in most of the crosses, which indicated that the most part of heterosis was due to the dominance and dominance x dominance types of interaction and less for additive x dominance type of gene effect.