Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant?
Early vigour (biomass accumulation) is a useful but complex trait in rainfed rice (Oryza sativa L). Little is known on trade-offs with drought tolerance. This study explored the relevance of (sugar) metabolic and morphogenetic traits to describe the genetic diversity of rice early vigour and its phe...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2012
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/165748 |
| _version_ | 1855515477718073344 |
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| author | Rebolledo, Maria-Camila Dingkuhn, Michael Clément-Vidal, Anne Rouan, Lauriane Luquet, Delphine |
| author_browse | Clément-Vidal, Anne Dingkuhn, Michael Luquet, Delphine Rebolledo, Maria-Camila Rouan, Lauriane |
| author_facet | Rebolledo, Maria-Camila Dingkuhn, Michael Clément-Vidal, Anne Rouan, Lauriane Luquet, Delphine |
| author_sort | Rebolledo, Maria-Camila |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Early vigour (biomass accumulation) is a useful but complex trait in rainfed rice (Oryza sativa L). Little is known on trade-offs with drought tolerance. This study explored the relevance of (sugar) metabolic and morphogenetic traits to describe the genetic diversity of rice early vigour and its phenotypic plasticity under drought conditions. A greenhouse experiment was conducted to characterize on a panel of 43 rice genotypes plant morphogenesis and sugar concentration in expanded (source) and expanding (sink) leaves.Across genotypes in control treatment, leaf starch concentration was negatively correlated with organogenetic development rate (DR, defined as leaf appearance rate on main stem). Genotypes with small leaves had high DR and tiller number but low leaf starch concentration. Under drought, vigorous genotypes showed stronger growth reduction. Starch concentration decreased in source leaves, by contrast with soluble sugars and with that observed in sink leaves. Accordingly, genotypes were grouped in three clusters differing in constitutive vigour, starch storage and growth maintenance under drought showing a trade off between constitutive vigour and drought tolerance.It was therefore suggested that non structural carbohydrates, particularly starch, were relevant markers of early vigour. Their relevance as markers of growth maintenance under drought needs to be further explored. Results are discussed regarding novel process based traits to be introduced in the GRiSP (Global Rice Science Partnership) phenotyping network. |
| format | Journal Article |
| id | CGSpace165748 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1657482024-12-19T14:11:54Z Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant? Rebolledo, Maria-Camila Dingkuhn, Michael Clément-Vidal, Anne Rouan, Lauriane Luquet, Delphine chemical composition drought drought resistance dry matter accumulation genetic diversity genotypes growth leaves morphogenesis plant characteristics plant water relations starch tillers vigour Early vigour (biomass accumulation) is a useful but complex trait in rainfed rice (Oryza sativa L). Little is known on trade-offs with drought tolerance. This study explored the relevance of (sugar) metabolic and morphogenetic traits to describe the genetic diversity of rice early vigour and its phenotypic plasticity under drought conditions. A greenhouse experiment was conducted to characterize on a panel of 43 rice genotypes plant morphogenesis and sugar concentration in expanded (source) and expanding (sink) leaves.Across genotypes in control treatment, leaf starch concentration was negatively correlated with organogenetic development rate (DR, defined as leaf appearance rate on main stem). Genotypes with small leaves had high DR and tiller number but low leaf starch concentration. Under drought, vigorous genotypes showed stronger growth reduction. Starch concentration decreased in source leaves, by contrast with soluble sugars and with that observed in sink leaves. Accordingly, genotypes were grouped in three clusters differing in constitutive vigour, starch storage and growth maintenance under drought showing a trade off between constitutive vigour and drought tolerance.It was therefore suggested that non structural carbohydrates, particularly starch, were relevant markers of early vigour. Their relevance as markers of growth maintenance under drought needs to be further explored. Results are discussed regarding novel process based traits to be introduced in the GRiSP (Global Rice Science Partnership) phenotyping network. 2012-12 2024-12-19T12:55:25Z 2024-12-19T12:55:25Z Journal Article https://hdl.handle.net/10568/165748 en Springer Rebolledo, Maria-Camila; Dingkuhn, Michael; Clément-Vidal, Anne; Rouan, Lauriane and Luquet, Delphine. 2012. Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant?. Rice, Volume 5, no. 1 |
| spellingShingle | chemical composition drought drought resistance dry matter accumulation genetic diversity genotypes growth leaves morphogenesis plant characteristics plant water relations starch tillers vigour Rebolledo, Maria-Camila Dingkuhn, Michael Clément-Vidal, Anne Rouan, Lauriane Luquet, Delphine Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant? |
| title | Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant? |
| title_full | Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant? |
| title_fullStr | Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant? |
| title_full_unstemmed | Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant? |
| title_short | Phenomics of rice early vigour and drought response: are sugar related and morphogenetic traits relevant? |
| title_sort | phenomics of rice early vigour and drought response are sugar related and morphogenetic traits relevant |
| topic | chemical composition drought drought resistance dry matter accumulation genetic diversity genotypes growth leaves morphogenesis plant characteristics plant water relations starch tillers vigour |
| url | https://hdl.handle.net/10568/165748 |
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