Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India
In shallow rainfed rice agro-ecosystems, drought stress can occur at any growth stage and can cause a significant yield reduction. During recent years, some rice varieties possessing tolerance of reproductive-stage drought stress have recently been developed. Tolerance of vegetative-stage drought st...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2017
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| Acceso en línea: | https://hdl.handle.net/10568/165015 |
| _version_ | 1855528376079482880 |
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| author | Swain, Padmini Raman, Anitha Singh, S.P. Kumar, Arvind |
| author_browse | Kumar, Arvind Raman, Anitha Singh, S.P. Swain, Padmini |
| author_facet | Swain, Padmini Raman, Anitha Singh, S.P. Kumar, Arvind |
| author_sort | Swain, Padmini |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In shallow rainfed rice agro-ecosystems, drought stress can occur at any growth stage and can cause a significant yield reduction. During recent years, some rice varieties possessing tolerance of reproductive-stage drought stress have recently been developed. Tolerance of vegetative-stage drought stress is also required to improve rice productivity in drought-prone regions. In this study, we evaluated a set of rice breeding lines for their response to a range of different types of vegetative-stage drought stress in order to propose standardized phenotyping protocols for conducting vegetative-stage drought stress screening trials and also to identify genotypes combining tolerance of vegetative- and reproductive-stage drought stress. A soil water potential threshold of −20 kPa during the vegetative stage was identified as the target for effective selection under vegetative stage with grain yield reduction of about 50% compared to irrigated control trials. Genotypes identified as showing high yield under reproductive-stage drought stress were not necessarily the genotypes showing best performance under vegetative-stage drought stress. Genotypes IR72667-16-1-B-B-3, IR78908-126-B-2-B, and IR79970-B-47-1 showed tolerance of both vegetative-stage and reproductive-stage drought stress. For most, the genotypes that were best under vegetative stage drought or even vegetative stage + reproductive stage drought were different from the genotypes that were best under reproductive stage drought. Based on the cultivar superiority measure, IR69515-6-KKN-4-UBN-4-2-1-1-1 and IR78908-126-B-1-B were the stable genotypes (indicated by low Pi) under both irrigated control and severe vegetative stress conditions, genotypes IR83614-203-B and IR78908-80-B-3-B were stable under irrigated control conditions and moderate stress, whereas IR72667-16-1-B-B-3 was stable under both moderate and severe vegetative-stage stress conditions |
| format | Journal Article |
| id | CGSpace165015 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1650152025-02-19T14:25:43Z Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India Swain, Padmini Raman, Anitha Singh, S.P. Kumar, Arvind In shallow rainfed rice agro-ecosystems, drought stress can occur at any growth stage and can cause a significant yield reduction. During recent years, some rice varieties possessing tolerance of reproductive-stage drought stress have recently been developed. Tolerance of vegetative-stage drought stress is also required to improve rice productivity in drought-prone regions. In this study, we evaluated a set of rice breeding lines for their response to a range of different types of vegetative-stage drought stress in order to propose standardized phenotyping protocols for conducting vegetative-stage drought stress screening trials and also to identify genotypes combining tolerance of vegetative- and reproductive-stage drought stress. A soil water potential threshold of −20 kPa during the vegetative stage was identified as the target for effective selection under vegetative stage with grain yield reduction of about 50% compared to irrigated control trials. Genotypes identified as showing high yield under reproductive-stage drought stress were not necessarily the genotypes showing best performance under vegetative-stage drought stress. Genotypes IR72667-16-1-B-B-3, IR78908-126-B-2-B, and IR79970-B-47-1 showed tolerance of both vegetative-stage and reproductive-stage drought stress. For most, the genotypes that were best under vegetative stage drought or even vegetative stage + reproductive stage drought were different from the genotypes that were best under reproductive stage drought. Based on the cultivar superiority measure, IR69515-6-KKN-4-UBN-4-2-1-1-1 and IR78908-126-B-1-B were the stable genotypes (indicated by low Pi) under both irrigated control and severe vegetative stress conditions, genotypes IR83614-203-B and IR78908-80-B-3-B were stable under irrigated control conditions and moderate stress, whereas IR72667-16-1-B-B-3 was stable under both moderate and severe vegetative-stage stress conditions 2017-08 2024-12-19T12:54:36Z 2024-12-19T12:54:36Z Journal Article https://hdl.handle.net/10568/165015 en Open Access Elsevier Swain, Padmini; Raman, Anitha; Singh, S.P. and Kumar, Arvind. 2017. Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India. Field Crops Research, Volume 209 p. 168-178 |
| spellingShingle | Swain, Padmini Raman, Anitha Singh, S.P. Kumar, Arvind Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India |
| title | Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India |
| title_full | Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India |
| title_fullStr | Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India |
| title_full_unstemmed | Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India |
| title_short | Breeding drought tolerant rice for shallow rainfed ecosystem of eastern India |
| title_sort | breeding drought tolerant rice for shallow rainfed ecosystem of eastern india |
| url | https://hdl.handle.net/10568/165015 |
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