Combining ability and gene action analysis in okra (Abelmoschus esculentus L. Moench)

DOI:10.37992/2024.1503.094

  • Rajneesh Kumar, Manoj Kumar Pandey, Smita Kumari, Shambhu Chouhan and Aman Tutlani

Abstract

The present research was conducted in Okra to study combining ability and gene action in a set of 28 F1s developed by crossing seven lines and four testers. The experiment was laid out in a Randomized Block Design with three replications and observations were recorded on 12 traits viz. days to 50% flowering, days to first picking, number of internodes, number of branches plant-1, fruit length at maturity and harvest, number of fruits plant-1, number of seeds fruit-1, seed index, fruit weight, yield per plant and plant height. The results revealed that two lines viz., VRO-4 and Sel-2 were excellent general combiners for most of the traits in both positive and negative direction as per desirable traits. Cross VRO-6 x Varsha Uphar recorded highly significant SCA effects for eight traits and GAO-5 x GJO-3 for yield trait. Variance due to GCA was less than SCA, and the GCA/SCA ratio was less than unity indicating preponderance of non-additive gene action for all the traits. This suggested the feasibility of exploitation of heterosis.

Keywords: Gene action, Fruit yield, Okra, GCA and SCA

Published
04-10-2024
How to Cite
Rajneesh Kumar, Manoj Kumar Pandey, Smita Kumari, Shambhu Chouhan and Aman Tutlani

Combining ability and gene action analysis in okra Abelmoschus esculentus L. Moench

. 2024. Electronic Journal of Plant Breeding, 15 3, 765-772. Retrieved from https://www.ejplantbreeding.org/index.php/EJPB/article/view/5009
Section
Research Note