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Subject: Vegetable Science × Author: Chandra, Kavya × End date: 2024 × Start date: 2020 × Type: Thesis ×
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    ThesisItemOpen Access
    Assessment of genetic diversity using morphological traits in Brinjal (Solanum melongena L.) germplasm
    (G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-08) Chandra, Kavya; Verma, Alka
    The present experiment entitled “Assessment of Genetic Diversity Using Morphological Characters of Brinjal (Solanum melongena L.) Germplasm” was conducted at Vegetable Research Centre of GBPUA&T, Pantnagar, Uttarakhand, during the kharif season of 2021-22. Seventy genotypes including two checks were evaluated in Augmented block design II. During the experiment observations of fifteen parameters were taken. The quantitative parameters which were recorded were days to 50% flowering, days to 1st harvest, fruit length, fruit diameter, number of fruits per plant, average fruit weight, fruit yield per plant, total fruit yield, plant height and number of primary branches. Analysis of variance revealed that all the characters under study showed highly significant differences except fruit diameter. High genotypic and phenotypic coefficient of variation were observed for fruit diameter, number of fruits per plant, average fruit weight, fruit yield per plant and total fruit yield. A narrow range of difference between PCV & GCV was seen which indicates a little influence of environment on phenotypic expression of these traits. High heritability along with high genetic advance as per cent mean was observed for all the characters studied indicating direct selection for these traits would prove useful. Fruit yield per hectare showed positive correlation with number of fruits per plant, average fruit weight, fruit yield per plant suggesting that selection for these traits would be effective for improving the yield in brinjal. Higher magnitude of positive direct effect on yield was observed in number of fruits per plant, average fruit weight, fruit yield per plant which indicates their true positive and significant association with yield. Hence, direct selection for these traits will be rewarding. Seventy genotypes were classified into four clusters following cluster analysis. Maximum inter-cluster distance was found between cluster I and III indicating that genotypes in these clusters can be used as parents in hybridization programme. Among the characters studied, fruit yield per plant showed maximum contribution towards total diversity followed by total fruit yield, number of fruit per plant, fruit diameter, number of primary branches, average fruit weight, fruit length and days to 50% flowering. Based on above observations, the genotypes PB-229, PB-262, PB-228, PB-261, PB-242 and PB-239 in long group, with PB-219 and PB-264 in round fruited group were found superior and can be recommended for cultivation under Tarai region of Uttarakhand.