• Sajjad Ali Panhwar

• Shah Nawaz Mari

• Mohammad Ameen Abro

• Zahoor Ahmed Soomro

• Nazeer Ali Panhwar

• Ayaz Ali Soomro

• Zaheer Ahmed Jatoi

• Muhammad Tahir Jatoi

• Muhammad Zahir Ahsan

• Abdul Razzaque Channa

• Abdul Wahab Soomro

• Asghar Ali Rajper

Abstract

The experiment determining the variability and heritability in 17 genotypes of upland cotton were carried out in randomized complete block design with three replications during 2017-18. The hybrids manifested highly significant differences (P > 0.01 for all traits except lint index. The hybrids presented highest heritability, genetic advance, and selection index for all observed traits. Seed cotton yield per plant observed maximum phenotypic coefficient of variation (12.65%) followed by the plant height (5.36%). Higher value of phenotypic coefficient of variation than genotypic coefficient of variation indicated the influence of the environmental interaction in expression of traits. The highest GCV was exhibited in seed cotton yield followed by the Plant height, number of monopodia, and number of sympodia per plant and GOT%. Heritability was expressed remarkably high for staple length (92.45%) followed by monopodia per plant, sympodia per plant and seed index. Highest selection response was obtained in monopodia per plant, seed cotton yield and boll weight. High heritability with genetic advance suggested vigorous phenotypic selection in breeding program for batter improvement for above observed traits.

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