0973-7510 Journal of Pure and Applied Microbiology 2581-690X DR. M.N. Khan 10.22207/JPAM.10.4.103 Estimation of Heritability for Seed Cotton Yield in Cotton Based on Regression Approach Tantuway Girish Patil Shreekant S Kencharaddi Hanamaraddi Tigga Aman Edke Vinayak Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad - 580 005, India. 30 12 2016 10 4 3249 3252 Copyright © 2016 The Author(s) 2016 This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.https://creativecommons.org/licenses/by/4.0/

Main focus of this study was to calculate the heritability for seed cotton yield based on regression approach by utilising the ten F5 and ten F6 lines of two populations derived from a heterotic box. Ten F6 lines of RSG group derived from (DSMR-10 X DSG-3- 5) cross were regressed over same F5 lines for seed cotton yield. Similar procedure was done for lines of RGR group (DRGR-32-100 X DRGR-24-178) cross. By utilising the regression value heritability of seed cotton yield was calculated as suggested by Smith and Kinman, 1965. The narrow sense heritability for RSG group and RGR group lines was 24.90 and 21.21 per cent. Broad sense heritability was also calculated based on RBD analysis separately for RSG and RGR group lines.

Keywords Consistency of combining ability heritability RSG group RGR group