Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes
The present study was carried out in Kashmir (India) to assess the genetic variability for grain yield and component traits among 14 red rice ecotypes from temperate region (locally known as Zag for its coloured kernels) and correlation and path coefficients were also studied for fifteen agro-morpho...
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| Format: | Article |
| Language: | English |
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Society of Land Measurements and Cadastre from Transylvania (SMTCT)
2013-08-01
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| Series: | Notulae Scientia Biologicae |
| Online Access: | http://www.notulaebiologicae.ro/index.php/nsb/article/view/9088 |
| _version_ | 1828520254653857792 |
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| author | Gulzar Singh SANGHERA Subhash C. KASHYAP Ghulam A. PARRAY |
| author_facet | Gulzar Singh SANGHERA Subhash C. KASHYAP Ghulam A. PARRAY |
| author_sort | Gulzar Singh SANGHERA |
| collection | DOAJ |
| description | The present study was carried out in Kashmir (India) to assess the genetic variability for grain yield and component traits among 14 red rice ecotypes from temperate region (locally known as Zag for its coloured kernels) and correlation and path coefficients were also studied for fifteen agro-morphological characters. Genotypic and phenotypic coefficients of variation were high for grain yield, secondary branches per panicle and panicle weight; moderate for grain number per panicle, grain length:breadth (L:B) ratio and panicle density. High heritability accompanied by high to moderate genetic advance for panicle density, days to 50% flowering, plant height, grain number indicated the predominance of additive gene action for the expression of these characters. Grain yield was found to be positively and significantly correlated with number of tiller per plant, panicle density m-2 and number of grain per panicle at both genotypic and phenotypic levels indicating the importance of these characters for yield improvement in this material. The results of genotypic path analysis revealed that panicle density had the highest positive direct effect followed by plant height and days to flower. The overall results indicated that selection favouring higher panicle density, test weight and panicle weight and medium plant height with a reasonable balance for moderate grain number would help to achieve higher grain yield in this population of red rice ecotypes. |
| first_indexed | 2024-12-11T19:27:27Z |
| format | Article |
| id | doaj.art-74c27bb5a9394ef8a254b1c6d40d6978 |
| institution | Directory Open Access Journal |
| issn | 2067-3205 2067-3264 |
| language | English |
| last_indexed | 2024-12-11T19:27:27Z |
| publishDate | 2013-08-01 |
| publisher | Society of Land Measurements and Cadastre from Transylvania (SMTCT) |
| record_format | Article |
| series | Notulae Scientia Biologicae |
| spelling | doaj.art-74c27bb5a9394ef8a254b1c6d40d69782022-12-22T00:53:22ZengSociety of Land Measurements and Cadastre from Transylvania (SMTCT)Notulae Scientia Biologicae2067-32052067-32642013-08-015340040610.15835/nsb5390887966Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) EcotypesGulzar Singh SANGHERA0Subhash C. KASHYAP1Ghulam A. PARRAY2SKUAST-Kashmir, Mountain Research Centre for Field Crops, Khudwani, Anantnag, 192102, J and KSKUAST-Kashmir, Mountain Research Centre for Field Crops, Khudwani, Anantnag, 192102, J and KSKUAST-Kashmir, Mountain Research Centre for Field Crops, Khudwani, Anantnag, 192102, J and KThe present study was carried out in Kashmir (India) to assess the genetic variability for grain yield and component traits among 14 red rice ecotypes from temperate region (locally known as Zag for its coloured kernels) and correlation and path coefficients were also studied for fifteen agro-morphological characters. Genotypic and phenotypic coefficients of variation were high for grain yield, secondary branches per panicle and panicle weight; moderate for grain number per panicle, grain length:breadth (L:B) ratio and panicle density. High heritability accompanied by high to moderate genetic advance for panicle density, days to 50% flowering, plant height, grain number indicated the predominance of additive gene action for the expression of these characters. Grain yield was found to be positively and significantly correlated with number of tiller per plant, panicle density m-2 and number of grain per panicle at both genotypic and phenotypic levels indicating the importance of these characters for yield improvement in this material. The results of genotypic path analysis revealed that panicle density had the highest positive direct effect followed by plant height and days to flower. The overall results indicated that selection favouring higher panicle density, test weight and panicle weight and medium plant height with a reasonable balance for moderate grain number would help to achieve higher grain yield in this population of red rice ecotypes.http://www.notulaebiologicae.ro/index.php/nsb/article/view/9088 |
| spellingShingle | Gulzar Singh SANGHERA Subhash C. KASHYAP Ghulam A. PARRAY Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes Notulae Scientia Biologicae |
| title | Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes |
| title_full | Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes |
| title_fullStr | Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes |
| title_full_unstemmed | Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes |
| title_short | Genetic Variation for Grain Yield and Related Traits in Temperate Red Rice (Oryza sativa L.) Ecotypes |
| title_sort | genetic variation for grain yield and related traits in temperate red rice oryza sativa l ecotypes |
| url | http://www.notulaebiologicae.ro/index.php/nsb/article/view/9088 |
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