Nature and magnitude of genetic variability and diversity studies in okra (Abelmoschus esculentus L. Moench)
In the present investigation, an attempt has been made to evaluate the genetic variability of yield contributing characters, and the genetic diversityin forty-four genotypes of okra collected from the IIHR, Bangalore, India. Analysis of variance indicated significant differences among thegenotypes f...
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| Format: | Article |
| Language: | English |
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Indian Society of Plant Breeders
2010-12-01
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| Series: | Electronic Journal of Plant Breeding |
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| Online Access: | http://sites.google.com/site/ejpb10/vol-1-6/Vol-1-6-1426-1430.pdf?attredirects=0 |
| _version_ | 1818992088882085888 |
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| author | K. Prakash and M. Pitchaimuthu |
| author_facet | K. Prakash and M. Pitchaimuthu |
| author_sort | K. Prakash and M. Pitchaimuthu |
| collection | DOAJ |
| description | In the present investigation, an attempt has been made to evaluate the genetic variability of yield contributing characters, and the genetic diversityin forty-four genotypes of okra collected from the IIHR, Bangalore, India. Analysis of variance indicated significant differences among thegenotypes for different morphological characters. High GCV and PCV were observed for plant height, inter-nodal length, first flowering node,first fruit producing node, height of first flowering node, average fruit weight and number of seeds per fruit. On the basis of D2 analysis, the 44genotypes were grouped into twelve clusters. The cluster III was the largest with eight genotypes followed by cluster I and VIII with seven,cluster II with five, cluster XII with three while, clusters IV, V, VI, IX, X and XI included only two genotype in each. The intra-cluster distancewas maximum in cluster XII (28.14), while inter-cluster distance was maximum between cluster VI and VIII (35.57) followed by I and IX(35.31), thus being a good source for attempting hybridization. Among the 44 genotypes, IIHR-238, IIHR-241 showed maximum number offruits per plant and total yield per plant (g). The characters namely days to 50% flowering (35.62%), 100 seed weight (28.44%), number of seedsper fruit (17.23%) and average fruit weight (8.14%) directly contributed towards maximum divergence and, therefore, selection of divergentparents based on these characters is recommended for getting good hybrids or segregants in okra. |
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| id | doaj.art-58637396feba4d978627e7aaf7a3c90c |
| institution | Directory Open Access Journal |
| issn | 0975-928X |
| language | English |
| last_indexed | 2024-12-20T20:20:36Z |
| publishDate | 2010-12-01 |
| publisher | Indian Society of Plant Breeders |
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| series | Electronic Journal of Plant Breeding |
| spelling | doaj.art-58637396feba4d978627e7aaf7a3c90c2022-12-21T19:27:36ZengIndian Society of Plant BreedersElectronic Journal of Plant Breeding0975-928X2010-12-011614261430Nature and magnitude of genetic variability and diversity studies in okra (Abelmoschus esculentus L. Moench)K. Prakash and M. PitchaimuthuIn the present investigation, an attempt has been made to evaluate the genetic variability of yield contributing characters, and the genetic diversityin forty-four genotypes of okra collected from the IIHR, Bangalore, India. Analysis of variance indicated significant differences among thegenotypes for different morphological characters. High GCV and PCV were observed for plant height, inter-nodal length, first flowering node,first fruit producing node, height of first flowering node, average fruit weight and number of seeds per fruit. On the basis of D2 analysis, the 44genotypes were grouped into twelve clusters. The cluster III was the largest with eight genotypes followed by cluster I and VIII with seven,cluster II with five, cluster XII with three while, clusters IV, V, VI, IX, X and XI included only two genotype in each. The intra-cluster distancewas maximum in cluster XII (28.14), while inter-cluster distance was maximum between cluster VI and VIII (35.57) followed by I and IX(35.31), thus being a good source for attempting hybridization. Among the 44 genotypes, IIHR-238, IIHR-241 showed maximum number offruits per plant and total yield per plant (g). The characters namely days to 50% flowering (35.62%), 100 seed weight (28.44%), number of seedsper fruit (17.23%) and average fruit weight (8.14%) directly contributed towards maximum divergence and, therefore, selection of divergentparents based on these characters is recommended for getting good hybrids or segregants in okra.http://sites.google.com/site/ejpb10/vol-1-6/Vol-1-6-1426-1430.pdf?attredirects=0Okragenetic variabilityheritabilitygenetic divergenceD2 statistics. |
| spellingShingle | K. Prakash and M. Pitchaimuthu Nature and magnitude of genetic variability and diversity studies in okra (Abelmoschus esculentus L. Moench) Electronic Journal of Plant Breeding Okra genetic variability heritability genetic divergence D2 statistics. |
| title | Nature and magnitude of genetic variability and diversity studies in okra (Abelmoschus esculentus L. Moench) |
| title_full | Nature and magnitude of genetic variability and diversity studies in okra (Abelmoschus esculentus L. Moench) |
| title_fullStr | Nature and magnitude of genetic variability and diversity studies in okra (Abelmoschus esculentus L. Moench) |
| title_full_unstemmed | Nature and magnitude of genetic variability and diversity studies in okra (Abelmoschus esculentus L. Moench) |
| title_short | Nature and magnitude of genetic variability and diversity studies in okra (Abelmoschus esculentus L. Moench) |
| title_sort | nature and magnitude of genetic variability and diversity studies in okra abelmoschus esculentus l moench |
| topic | Okra genetic variability heritability genetic divergence D2 statistics. |
| url | http://sites.google.com/site/ejpb10/vol-1-6/Vol-1-6-1426-1430.pdf?attredirects=0 |
| work_keys_str_mv | AT kprakashandmpitchaimuthu natureandmagnitudeofgeneticvariabilityanddiversitystudiesinokraabelmoschusesculentuslmoench |