Genetic divergence studies in okra (abelmoschus esculentus (l.) Moench.)
dc.contributor.advisor | Waskar, D.P. | |
dc.contributor.author | Banothu Rambabu | |
dc.date.accessioned | 2020-10-09T15:41:11Z | |
dc.date.available | 2020-10-09T15:41:11Z | |
dc.date.issued | 2017-07-05 | |
dc.description.abstract | The present investigation was undertaken to estimate the genetic divergence in okra and to carry out yield component analysis through correlation and path analysis. Twenty genotypes were sown in a randomized block design with two replications, during Kharif 2016-2017 at Horticulture Research Station, College of agriculture, VNMKV, Parbhani, Maharashtra. The objective of the experiment was to identify divergent genotypes to use as donor parents in hybridization programmes. The D2 analysis for eighteen characters partitioned the twenty genotypes into five clusters. The maximum genetic divergence was observed between cluster III and V followed by between clusters I and V. The maximum intra cluster distance was shown by cluster IL The characters number of branches per plant, number of fruits per plant, total number of pickings, fruit weight, fruit length and fruit yield per plant contributed greatly towards diversity. The clusters showing high genetic divergence could be effectively utilized in heterosis breeding programme. If a breeding programme is used at improving growth attributes like plant height, then cluster III showing maximum plant height can be utilized in breeding programme. Therefore, a plant breeder may keep in mind the above aspects to obtain superior hybrids and good recombinants. The analysis of variance revealed significant difference for eighteen characters studied suggesting considerable amount of variability exists among 1 the genotypes. Wide range of variability was observed for plant height, number of seeds per fruit, iodine content, and fruit yield per plant indicating the scope for selection of suitable initial breeding material for further improvement. In a true agreement with the GCV and PCV values in the present investigation for most of the characters was noticed, indicating additive genetic variance governing the high heritability (>60%) with high genetic advance as per cent of mean was high (>20%) for plant height, number of branches, days to first flowering, days to 50% flowering, days to first harvest, average fruit weight, number of fruits per plant, number of seeds per fruit, number of pickings, 100 seed weight, crude fibre content, iodine content, iron content and fruit yield per plant. Hence there could be exercised for improvement through selection. From correlation studies it was observed that fruit yield per plant has exhibited highly positive and significant association with plant height, number of branches per plant, inter nodal length, days to last harvest, fruit length, fruit girth, fruit weight, number of fruits per plant, number of seeds per fruit, 100 seed weight and number of pickings, crude fibre content, iron content and iodine content. Therefore, it is emphasized to lay attention on these traits in crop improvement programme of okra in future. The results on path analysis indicated that the characters which exhibited maximum positive direct effect on fruit yield per plant and positive associations like Plant height, Number of branches per plant, inter nodal length, days to first flowering, days to first harvest, fruit length, fruit girth, average fruit weight, number of seeds per fruit, 100 seeds weight, total number of picking, crude fibre content, iodine content and iron content would be more effective to bring improvement of yield and to evolve superior high yielding genotypes in okra. On the basis of mean performance of the genotypes among traits studied, IC-43743 from cluster III, PBNOK-2 from cluster V and IC-22237 from cluster IL were found to be best in almost all the attributes i.e. , growth, earliness, fruit traits, and yield. Hence, for exploitation of fruit quality four genotypes i.e., IC-10533, PBNOK-2, PBNOK-5 and EC-755648 were found to be best for qualitative characters. So, these genotypes were considered the best genotypes and would be used as parental source in future breeding programmes. | en_US |
dc.identifier.other | T08379 | |
dc.identifier.uri | https://krishikosh.egranth.ac.in/handle/1/5810153102 | |
dc.keywords | GENETIC, DIVERGENCE, STUDIES, OKRA, Abelmoschus, esculentus | en_US |
dc.language.iso | English | en_US |
dc.pages | 146 | en_US |
dc.publisher | Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani | en_US |
dc.sub | Vegetable Science | en_US |
dc.theme | Agriculture | en_US |
dc.these.type | M.Sc | en_US |
dc.title | Genetic divergence studies in okra (abelmoschus esculentus (l.) Moench.) | en_US |
dc.type | Thesis | en_US |