Revealing genetic diversity for the improvement of pod yield in okra (Abelmoschus esculentus L. Moench)
2023
Dharminder Kumar1, Jagmeet Singh2, Rahul Pathania2*, Balbir Singh Dogra3 and VGS Chandel4
Seventy five okra genotypes were examined for genetic divergence for fruit yield and its contributing traits during summer,2020 at Regional Horticultural Research & Training Station, Jachh, Nurpur, Himachal Pradesh. Higher PCV and GCV values were observed for fruit weight, days to 50 per cent flowering, internodal length and fruit production/plant. High heritability along with genetic advance was observed for days to 50 per cent flowering, the first fruiting node, internodal length, fruit weight, number of seeds/fruit, plant height, and fruit yield/plant. Fruit weight, first fruiting node, number of ridges/fruit, days to 50 per cent flowering, fruit diameter, number of fruits/plant and leaf width recorded positive and significant phenotypic as well as genotypic correlation with fruit yield/plant. The path coefficient study revealed that fruit weight had the greatest positive direct impact on fruit yield/plant; followed by number of fruits/plant, first fruiting node, days to 50 per cent flowering, leaf width and hundred seed weight. Based on genetic divergence, the genotypes were divided into five clusters, with cluster I having the highest intra-cluster distance whereas, the lowest was observed in Cluster II. Clusters I and V showed the greatest inter-cluster distance, while the Clusters III and V showed the lowest. Therefore, to develop successful recombinant segregants, it would be advantageous to use genotypes from such clusters, depending on the distances between them.
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