Phenotypic Correlation and Heritability Estimates in Bt and non - Bt Cotton Genotypes


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Authors

  • Dr. Wajid Ali Jatoi Associate Professor, Department of Plant Breeding and Genetics, Sindh Agriculture University Tandojam, Pakistan
  • M. SIYAL Department of Plant Breeding and Genetics, Sindh Agriculture University Tandojam, Pakistan
  • N. Solongi Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan
  • A. H. Solangi Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan
  • S. Memon Associate Professor, Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

Keywords:

Phenotypic correlations, broad sense heritability, Bt cotton, seed cotton yield.

Abstract

A field experiment was conducted at the experimental area of the Department of Plant Breeding & Genetics, Sindh Agriculture University Tandojam, during the year 2022 in order to determine the phenotypic correlations and heritability estimates in Bt and non-Bt cotton genotypes. The trial was designed in Randomized Complete Block Design with four replications. The material consisted of eight upland cotton genotypes viz. CRIS-129, BT-3701, FH-901, FH-142, MS-370, Sindh-1, NIA-Ufaq, and SGA-1. The observations were recorded on plant height (cm), sympodial branches per plant, bolls per plant, boll weight (g), ginning outturn percentage, seed index (g), seed cotton yield per plant (g) and staple length (mm). Analysis of Variance showed meaningful differences between theĀ  genotypes for most of the characters studied excluding seed index was non-significant. The phenotypic correlations indicated thatĀ  traits viz. plant height, sympodial branches, number of bolls, ginning out-turn (%) were positively associated with yield. The results further revealed high heritability (h2 b.s) for plant height, sympodial branches, bolls per plant, boll weight, yield, ginning out-turn (%) and staple length, whereas low heritability was observed only for seed index. Promising genotypes can be used for hybridization programs in order to isolate useful recombination in the segregating generations.

Author Biographies

  • Dr. Wajid Ali Jatoi, Associate Professor, Department of Plant Breeding and Genetics, Sindh Agriculture University Tandojam, Pakistan

    Associate Professor, Department of Plant Breeding and Genetics, Sindh Agriculture University Tandojam, Pakistan

  • M. SIYAL, Department of Plant Breeding and Genetics, Sindh Agriculture University Tandojam, Pakistan

    Department of Plant Breeding and Genetics, Sindh Agriculture University Tandojam, Pakistan

  • N. Solongi, Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

    Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

  • A. H. Solangi, Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

    Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

  • S. Memon, Associate Professor, Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

    Associate Professor, Department of Plant Breeding and Genetics, Sindh Agriculture University, Tandojam, Pakistan

Submitted

2024-02-16

Published

2023-12-06

How to Cite

Phenotypic Correlation and Heritability Estimates in Bt and non - Bt Cotton Genotypes. (2023). Cotton Research Journal, 14(2), 6-9. https://epubs.icar.org.in/index.php/CoRJ/article/view/148584