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Subject: Vegetable Science × Author: Beri, Sonakshi × End date: 2024 × Start date: 2020 × Type: Thesis ×
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    ThesisItemOpen Access
    Genetic variability and interrelationship of yield and its contributing traits in okra [Abelmoschus esculentus (L.) Moench]
    (G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-08) Beri, Sonakshi; Verma, Alka
    The present investigation on “Genetic Variability and Interrelationship of Yield and its Contributing Traits in Okra [Abelmoschus esculentus (L.) Moench]” was carried out during the Kharif season 2021 at Vegetable Research Centre, Govind Ballabh Pant University of Agriculture & Technology, Pantnagar, with the objectives to assess genetic variability, heritability and genetic advance, correlation coefficient, path coefficient and genetic divergence for different quantitave traits. Nineteen genotypes including check were evaluated in Randomized block design with three replications. Analysis of variance revealed that highly significant genetic differences were present among the genotypes of okra for ten characters studied. Moderate to wide range of mean values among the genotypes for different characters were observed. Moderate to high genotypic and phenotypic coefficient of variation were reported for majority of characters under study except days to 50% flowering and days to first harvest. High heritability coupled to high genetic advance were recorded in average pod weight, pod yield per plant, number of primary branches per plant, plant height and total fruit yield indicating direct selection for these traits will be effective. Highly significant and positive correlation of total pod yield was observed with pod yield per plant followed by number of pods per plant and average pod weight indicating the possibility of simultaneous selection for these traits. The higher magnitude of positive direct effect on total fruit yield was contributed through pod yield per plant followed by pod length and number of primary branches per plant. Therefore, direct selection of these traits will be gratifying. Genotype PO 405 which was early as well high yielder than the check and PO 414 also found good yielder as well immune to YVMV can be recommended for cultivation. Clustering through D2 analysis revealed maximum inter-cluster distance between cluster II and cluster VI, thus the genotypes grouped under cluster II and cluster VI may yield maximum heterosis upon hybridization and also create wide variability including transgressive segregants in selfed generation.