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Genetic diversity for yield and fiber traits in upland cotton (Gossypium hirsutum L.) genotypes
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Genetic diversity for yield and fiber traits in upland cotton (Gossypium hirsutum L.) genotypes
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Journal Article
Genetic diversity for yield and fiber traits in upland cotton (Gossypium hirsutum L.) genotypes
2025
Overview
The present study was conducted at the CRI Cotton Research Institute in Tandojam to evaluate the genetic diversity for yield and fiber characteristics in upland cotton. The crop was grown using a randomized complete block design with 3 replications and 8 genotypes, including a single check variety. The cluster analysis divided the genotypes into four groups based on their genotypic homogeneity. Cluster 1 contains two genotypes (TH-25/23, TH-23/23), and there is a close relationship between them. Cluster 2 included two genotypes (TH-22/23, TH-24/23), cluster 3 contains genotypes TH-27/23 and Sindh-1, and cluster 4 contains two genotypes TH-26/23 and TH-28/23 with a maximum distance between them. Similarly, the presence of high loading was significantly observed in the first principal component PCA-4, 5, 6, and 7 exhibited positive loadings for sympodial branches plant-1, height of plant, and monopodial branches plant-1, respectively. A greater percentage of variance was observed in PCA-7 and PCA-8 (99.90% and 100%). Among the genotypes, TH-26/23 and TH-22/23 should be preferred for further breeding programs, and they could be utilized in hybridization and selection programs for the development of a new variety.
Publisher
International Society of Pure and Applied Biology
