Document Type : Original Article
Authors
1
Department of Genetics and Plant Breeding, Hajee Mohammed Danesh Science and Technology University, Dinajpur 5200, Bangladesh
2
Department of Genetics and Plant Breeding Faculty of Agriculture Hajee Mohammad Danesh Science & Technology University Dinajpur-5200, Bangladesh
10.21608/agro.2025.378282.1678
Abstract
Cotton is a crucial raw material for textile industry. The study aimed to evaluate variability and character associations of 100 upland cotton genotypes. For this, a field study was conducted from July to December, 2021 in the experimental field of Cotton Research, Training and Seed Multiplication Farm, Sadarpur, Dinajpur, Bangladesh. Here, eleven yield and yield-related traits were measured and the genotypes revealed significant differences for all of these traits. The genotype JA-11/L exhibited the greatest seed cotton yield per plant (128.54 g) followed by BC-0025 (126.25 g) and BC-0033 (126.10 g) along with superior average sympodial branches per plant, bolls per plant, single boll weight with early maturing phenomena. A high heritability (>70.00%) with increased genetic advance as a percentage of the mean (>20%) was revealed in plant height, phenotypic acceptability, bolls per plant and single boll weight. Seed cotton yield per plant exhibited a strong positive correlation with lint fiber yield per plant (0.820** and 0.776**), bolls per plant (0.469** and 0.297**) and phenotypic acceptability (0.442** and 0.326**) at both genotypic and phenotypic levels, respectively. Path analysis showed highest positive direct association between seed cotton yield per plant and lint fiber yield per plant (0.797 and 0.765), bolls per plant (0.216 and 0.063) and single boll weight (0.087 and 0.036) at both genotypic and phenotypic levels, respectively. Based on the overall performances, the genotypes JA-11/L, RA-2, RA-5, CB-8, TC-1903, BC-0025, BC-0033, BC-0042 and BC-0062 could be taken under consideration for future upland cotton breeding in Bangladesh.
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