STUDIES ON GENETIC DIVERGENCE FOR POD YIELD AND ITS CONTRIBUTING TRAITS IN OKRA [Abelmoschus esculentus L. (Moench)]
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Date
2021-11-15
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College of Horticulture and Forestry Neri, Hamirpur (H.P.)
Abstract
The present investigation entitled “Studies on genetic divergence for pod yield and its contributing traits in okra (Abelmoschus esculentus (L.) Moench).” was carried out on 75 genotypes of okra including one check (Pusa Bhindi-5) at vegetable farm located at Regional Horticultural Research and Training Station, Dr. YS Parmar University of Horticulture and Forestry, Jachh (Nurpur), District-Kangra (H.P.) during Summer season, 2020. To determine the level of variability, heritability, correlation, and path coefficient analysis for yield and other horticultural traits as well as the assessment of genetic divergence among genotypes, they were all analyzed in a RCBD. For all of the analyzed traits, analysis of variance revealed considerable variation among genotypes. Genotypes EC 305689, EC 305685, EC 305687, EC 305613 and LC-59-2 were considered superior in terms of overall performance for fruit yield per plant and other important traits. They may be potential parents for direct growing after multi-location evaluation or for use in future breeding programmes. The PCV and GCV for fruit weight, days to 50 per cent flowering, internodal length, and fruit production per plant were found higher. Heritability coupled with genetic gain was examined higher for days to 50 per cent flowering, first fruiting node, internodal length, fruit weight, number of seed/fruit, plant height and fruit yield/plant. A positive and significant correlation of fruit yield/plant was found with fruit weight, first fruiting node, number of ridges/fruit, number of fruits/plant, days to 50 per cent flowering, fruit diameter, and leaf width using phenotypic and genotypic correlation coefficients. The path coefficient analysis, 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, 100 seed weight, and leaf width. During genetic divergence analysis, 75 genotypes were grouped in five clusters and cluster I had the greatest intra-cluster distance, whereas Cluster II had the smallest. Clusters I and V had the maximum inter-cluster distance, such genotypes could be hybridised and used to develop superior hybrids/recombinants.