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<p>Cotton has globally significant economic importance, and cotton contributes 0.8% to GDP and 60% of textile exports in Pakistan. Cotton leaf curl disease (CLCuD) is a whitefly (<i>Bemisia tabaci</i>) transmitted disease, which causes a reduction in yield and fiber quality, and cotton faces serious challenges due to biotic stresses like whitefly. Morphological characterization, SSR markers, principal component analysis (PCA), biplot analysis, correlation studies, and cluster analysis were used to estimate whitefly resistance, yield-related traits, and genetic diversity among the morphological characterization of 150 Pakistani genotypes. Field evaluation along with molecular analysis was employed as a comprehensive approach. Strong genetic control was demonstrated by high heritability estimates in most traits. Genotypes demonstrated significant variability including pest resistance and growth parameters. Multivariate analysis demonstrated clear grouping of genotypes based on performance characteristics, with many components explaining the majority of observed diversity. The results described the potential of morpho-molecular screening for selecting superior genotypes in breeding programs. CA-12 and AGC-155 are recommended as parental lines for developing whitefly-resistant, high-yielding cotton varieties while Gomal-105 and SLS-87/175 are recommended as whitefly-susceptible parental lines, supporting improved cotton productivity and sustainable pest management in Pakistan.</p>

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Whitefly-Resistant Population Development Source Selection Among Cotton Germplasms of Pakistan Through Multivariate Tools

  • 期刊论文

  • 发表日期：

    2025年5月28日

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  • Obad Ul Rahman,
  • Syed Bilal Hussain,
  • Muhammad Javed

摘要

Cotton has globally significant economic importance, and cotton contributes 0.8% to GDP and 60% of textile exports in Pakistan. Cotton leaf curl disease (CLCuD) is a whitefly (Bemisia tabaci) transmitted disease, which causes a reduction in yield and fiber quality, and cotton faces serious challenges due to biotic stresses like whitefly. Morphological characterization, SSR markers, principal component analysis (PCA), biplot analysis, correlation studies, and cluster analysis were used to estimate whitefly resistance, yield-related traits, and genetic diversity among the morphological characterization of 150 Pakistani genotypes. Field evaluation along with molecular analysis was employed as a comprehensive approach. Strong genetic control was demonstrated by high heritability estimates in most traits. Genotypes demonstrated significant variability including pest resistance and growth parameters. Multivariate analysis demonstrated clear grouping of genotypes based on performance characteristics, with many components explaining the majority of observed diversity. The results described the potential of morpho-molecular screening for selecting superior genotypes in breeding programs. CA-12 and AGC-155 are recommended as parental lines for developing whitefly-resistant, high-yielding cotton varieties while Gomal-105 and SLS-87/175 are recommended as whitefly-susceptible parental lines, supporting improved cotton productivity and sustainable pest management in Pakistan.