Vol. 10, Issue 7 (2021)

Author(s):
Kumar Arvind, Gaurav SS and Tanu Shiri

Abstract:
Three generations i.e. Parents, F₁, and F₂, of twenty one crosses (Progeny) were used to estimate heterosis and inbreeding depression for growth, yield and yield contributing traits in okra. In general, twenty one crosses showed a wide range of heterotic effects for yield and yields related characters showing the importance of both additive and non-additive genes. VRO-6 × Pusa Sawni showed significant heterobeltiosis for almost all the no of fruit yield / Plant and its contributing traits particularly, VRO-3 x Arka Anamika for seed yield / plant (g) and no of seed / fruit. High heterotic cross combinations for different characters showed high inbreeding depression in the F₂ generation ranged from 50% flowering (- 9.72) to no of fruit / plant (-12.03) in cross VRO-3 x Arka Anamika, This may be due to most part of heterobeltiosis accounted for dominance and dominance × dominance type of epistatic interactions and less for additive × dominance type of gene effect. These findings useful for the improvement of no of fruit / plant and its seed yield / plant while handling the segregating generation for the development of improved varieties in okra.