Genetic variability and yield analysis in rice
Twenty-six diverse genotypes were cultivated for two consecutive warm wet seasons of 2015 and 2016 to study genetic variation and the cause-effect relationship of different quantitative characters on seed yield in rice. The genotypes showed significant variation for all the characters. Genotypic and...
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| Format: | Article |
| Language: | English |
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Indian Society of Plant Breeders
2021-03-01
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| Series: | Electronic Journal of Plant Breeding |
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| _version_ | 1818950641100259328 |
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| author | Sahanab Nath and P. C. Kole* |
| author_facet | Sahanab Nath and P. C. Kole* |
| author_sort | Sahanab Nath and P. C. Kole* |
| collection | DOAJ |
| description | Twenty-six diverse genotypes were cultivated for two consecutive warm wet seasons of 2015 and 2016 to study genetic variation and the cause-effect relationship of different quantitative characters on seed yield in rice. The genotypes showed significant variation for all the characters. Genotypic and phenotypic coefficients of variation were high for the flag leaf area, spikelet number, grain number, test weight and grain yield, and moderate for plant height, days to flowering, the number of panicle and primary branches per panicle. Heritability was high for days to flowering, plant height and test weight. Genetic advance as per cent of mean was very high for test weight and grain yield, moderate for plant height, flag leaf area and the number of grains, and low for spikelet fertility (%). Genotypic and phenotypic correlations of seed yield with plant height, flag leaf area, days to flowering, the number of primary and secondary branches per panicle, the number of spikelets and filled grains per panicle, spikelet fertility (%) and test weight were significant and positive. Genotypic path analysis indicated that direct selection for test weight, the number of primary and secondary branches per panicle in a positive direction with restricted selection for panicle number and spikelet fertility would increase the grain yield of rice in the population. |
| first_indexed | 2024-12-20T09:21:49Z |
| format | Article |
| id | doaj.art-141048017d8d46fe829a99f36838c7b7 |
| institution | Directory Open Access Journal |
| issn | 0975-928X |
| language | English |
| last_indexed | 2024-12-20T09:21:49Z |
| publishDate | 2021-03-01 |
| publisher | Indian Society of Plant Breeders |
| record_format | Article |
| series | Electronic Journal of Plant Breeding |
| spelling | doaj.art-141048017d8d46fe829a99f36838c7b72022-12-21T19:45:16ZengIndian Society of Plant BreedersElectronic Journal of Plant Breeding0975-928X2021-03-01121253258https://doi.org/10.37992/2021.1201.039Genetic variability and yield analysis in riceSahanab Nath and P. C. Kole*0Department of Genetics & Plant Breeding, Institute of Agriculture, Visva-Bharati University, Sriniketan- 731236, West Bengal, IndiaTwenty-six diverse genotypes were cultivated for two consecutive warm wet seasons of 2015 and 2016 to study genetic variation and the cause-effect relationship of different quantitative characters on seed yield in rice. The genotypes showed significant variation for all the characters. Genotypic and phenotypic coefficients of variation were high for the flag leaf area, spikelet number, grain number, test weight and grain yield, and moderate for plant height, days to flowering, the number of panicle and primary branches per panicle. Heritability was high for days to flowering, plant height and test weight. Genetic advance as per cent of mean was very high for test weight and grain yield, moderate for plant height, flag leaf area and the number of grains, and low for spikelet fertility (%). Genotypic and phenotypic correlations of seed yield with plant height, flag leaf area, days to flowering, the number of primary and secondary branches per panicle, the number of spikelets and filled grains per panicle, spikelet fertility (%) and test weight were significant and positive. Genotypic path analysis indicated that direct selection for test weight, the number of primary and secondary branches per panicle in a positive direction with restricted selection for panicle number and spikelet fertility would increase the grain yield of rice in the population.ricevariabilityheritabilitycorrelation and path coefficients |
| spellingShingle | Sahanab Nath and P. C. Kole* Genetic variability and yield analysis in rice Electronic Journal of Plant Breeding rice variability heritability correlation and path coefficients |
| title | Genetic variability and yield analysis in rice |
| title_full | Genetic variability and yield analysis in rice |
| title_fullStr | Genetic variability and yield analysis in rice |
| title_full_unstemmed | Genetic variability and yield analysis in rice |
| title_short | Genetic variability and yield analysis in rice |
| title_sort | genetic variability and yield analysis in rice |
| topic | rice variability heritability correlation and path coefficients |
| work_keys_str_mv | AT sahanabnathandpckole geneticvariabilityandyieldanalysisinrice |