Genetic variability and heritability in F2 population of Gossypium hirsutum for yield and its components

Muhammad Zahir Ahsan, Hafiz Tariq Mahmood


The success in most of the breeding program depends upon the variability and heritability of desirable traits, an experiment on genetic variability, heritability, correlation and path coefficient for seed yield and its attributing components was conducted in the F2 population of the cross  Lalazar × SLH-33 at cotton research station Sahiwal during Kharif season 2018. The segregating population were evaluated for eleven quantitative traits i.e. Plant height, number of monopodia per plant, number of sympodia per plant, number of bolls per plant, boll weight, number of seeds per boll, seed index, seed cotton yield per plant, Ginning turnout, staple length and micronaire value. A wide range of variability was observed for all these traits. A high value of GCV, Heritability and genetic advance percentage over mean was recorded for number of bolls per plant, number of sympodia per plant, number of seeds per boll and staple length. The traits having high heritability coupled with the moderate to high genetic advance as percentage of mean can be utilized as indirect selection for yield improvement.


Genotypic variance, phenotypic variance, heritability, genetic advance as percent of mean, correlation, path coefficient

Full Text:



Abstract Views or PDF Downloads

website counter



  • There are currently no refbacks.

Copyright (c) 2019 International Journal of Cotton Research and Technology

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

E-ISSN = 2707-5281

Website Views  hit counter