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Subject: Vegetable Science × Author: Shubham × End date: 2023 × Start date: 2020 × Type: Thesis ×
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    ThesisItemOpen Access
    Genetic variability and heterosis studies for morphological and fruit yield traits in okra
    (CCSHAU, Hisar, 2023-08) Shubham; Dhankhar, S. K.
    A field experiment entitled “Genetic variability and heterosis studies for morphological and fruit yield traits in okra” was conducted at Research Farm of the Department of Vegetable Science, CCS Haryana Agricultural University, Hisar during spring-summer and rainy season of 2022 using line x tester mating design with a view to study the extent of heterosis, GCV and PCV in advance inbred lines of okra and to find out correlation and path coefficients for fruit yield and its attributes. The experimental material comprised of twenty-one genetically diverse genotypes of okra involving twenty lines and one tester (HB-MS-1 Line) and standard check HBH-142. These lines and tester were crossed using line x tester mating design during spring-summer season of 2022, to produce twenty F1 crosses. Analysis of variance for different quantitative characters studied during the experimentation indicated highly significant differences among the parents, crosses and commercial check at 5% and 1% level of significance. In terms of yield per hectare, four crosses viz., HB-MS-1 X HB-20-3-4, HB-MS-1 X HB-11-3-4, HB-MS-1 HBTC-6-1-2, and HB-MS-1 x H.U showed significant positive economic heterosis over the standard check HBH-142 for yield and its contributing characters. Maximum phenotypic and genotypic variability was recorded for the trait plant height, first fruit node, fruits per plant, number of branches per plant and inetrnodal length. High estimates of heritability along with high genetic advance as percent mean was observed for plant height, first fruit node, fruits per plant, number of branches per plant and inetrnodal length. Fruit yield per plant were found to have positive correlation with with plant height, number of branches, fruit length, fruit diameter, fruits per plant, and negatively correlated with days to 50 percent flowering, internodal length, first fruit node.