Vol. 10, Issue 10 (2021)

Author(s):
A Rajani, L Naram Naidu, RVSK Reddy, N Ratna Kumari, D Srikanth and D Ratna Babu

Abstract:
The present investigation was conducted on heterosis for growth and fruit yield attributing characters in okra. Fifteen F₁ hybrids were generated by half diallel (excluding reciprocals) mating design. These F₁ hybrids along with six parents were evaluated in randomized block design with three replications during late Rabi season of 2018 at three locations HRS, Lam; KVK, V.R. Gudem and KVK, Vonipenta, Andhra Pradesh. Observations were recorded for five randomly selected and tagged plants from each treatment for growth and fruit yield attributing characters viz., plant height (cm), days to first flowering, internodal length (cm), first flowering node, days to 50% flowering, days to first picking, days to last picking (days), number of fruits per plant, fruit length (cm), fruit girth (cm), fruit weight (g), number of seeds per fruit, test weight (g/100), fruit yield per plant (g) and fruit yield per hectare (t). The values of F₁ hybrids averaged over three replications were used for estimating heterosis and pooled data was obtained. The top five heterotic cross combinations viz.,440-10-1 x HRB-9-2, VRO-6 x HRB-9-2, TCR-1674 x HRB-9-2, VRO-6 x JPM-20-16-39 and VRO-3 x HRB-9-2 were identified as stable with desirable heterosis for fruit yield and other important traits.