Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes
Drought is a major constraint to rainfed rice production in some parts of sub Saharan Africa (SSA) because of irregular and low rainfall. Improving root water uptake during progressive soil drying could contribute to terminal drought stress resistance. Two lysimeter experiments were conducted using...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Commonwealth Scientific and Industrial Research Organisation
2013
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| Acceso en línea: | https://hdl.handle.net/10568/165697 |
| _version_ | 1855514465090404352 |
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| author | Kijoji, Abubakary A. Nchimbi-Msolla, Susan Kanyeka, Zakaria L. Klassen, Stephen P. Serraj, Rachid Henry, Amelia |
| author_browse | Henry, Amelia Kanyeka, Zakaria L. Kijoji, Abubakary A. Klassen, Stephen P. Nchimbi-Msolla, Susan Serraj, Rachid |
| author_facet | Kijoji, Abubakary A. Nchimbi-Msolla, Susan Kanyeka, Zakaria L. Klassen, Stephen P. Serraj, Rachid Henry, Amelia |
| author_sort | Kijoji, Abubakary A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Drought is a major constraint to rainfed rice production in some parts of sub Saharan Africa (SSA) because of irregular and low rainfall. Improving root water uptake during progressive soil drying could contribute to terminal drought stress resistance. Two lysimeter experiments were conducted using 200 introgression lines (ILs) derived from Oryza sativa L. × Oryza glaberrima Steud. crosses (IR64/RAM54 and IR64/RAM90) to characterise water uptake and root traits under progressive soil drying and to assess genetic differences among these lines in relation to drought stress. The lysimeter facility setup and protocols for simultaneous monitoring of water uptake rates and leaf area are described. Significant genetic variability for water uptake and root traits among the ILs was observed under drought stress. Water uptake in the drought stress treatments was correlated with root length density (RLD) and root dry matter (RDM) at lower soil depths. The highest RLD values at depth were observed among the RAM90 ILs and genetic differences were observed between RAM90 and RAM54 populations, implying that accession RAM90 could be used as a source for improving drought avoidance in lowland rice. The ILs with greater water uptake identified in this study will be used in future research for improving drought resistance of rice in SSA. |
| format | Journal Article |
| id | CGSpace165697 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | Commonwealth Scientific and Industrial Research Organisation |
| publisherStr | Commonwealth Scientific and Industrial Research Organisation |
| record_format | dspace |
| spelling | CGSpace1656972025-12-08T10:29:22Z Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes Kijoji, Abubakary A. Nchimbi-Msolla, Susan Kanyeka, Zakaria L. Klassen, Stephen P. Serraj, Rachid Henry, Amelia africa agronomic traits drought stress genetic variation introgression lines oryza glaberrima production rainfed rice roots soil chemicophysical properties soil water content sub-saharan africa water uptake Drought is a major constraint to rainfed rice production in some parts of sub Saharan Africa (SSA) because of irregular and low rainfall. Improving root water uptake during progressive soil drying could contribute to terminal drought stress resistance. Two lysimeter experiments were conducted using 200 introgression lines (ILs) derived from Oryza sativa L. × Oryza glaberrima Steud. crosses (IR64/RAM54 and IR64/RAM90) to characterise water uptake and root traits under progressive soil drying and to assess genetic differences among these lines in relation to drought stress. The lysimeter facility setup and protocols for simultaneous monitoring of water uptake rates and leaf area are described. Significant genetic variability for water uptake and root traits among the ILs was observed under drought stress. Water uptake in the drought stress treatments was correlated with root length density (RLD) and root dry matter (RDM) at lower soil depths. The highest RLD values at depth were observed among the RAM90 ILs and genetic differences were observed between RAM90 and RAM54 populations, implying that accession RAM90 could be used as a source for improving drought avoidance in lowland rice. The ILs with greater water uptake identified in this study will be used in future research for improving drought resistance of rice in SSA. 2013 2024-12-19T12:55:22Z 2024-12-19T12:55:22Z Journal Article https://hdl.handle.net/10568/165697 en Commonwealth Scientific and Industrial Research Organisation Kijoji, Abubakary A.; Nchimbi-Msolla, Susan; Kanyeka, Zakaria L.; Klassen, Stephen P.; Serraj, Rachid and Henry, Amelia. 2013. Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes. Functional Plant Biol., Volume 40 no. 1 p. 54 |
| spellingShingle | africa agronomic traits drought stress genetic variation introgression lines oryza glaberrima production rainfed rice roots soil chemicophysical properties soil water content sub-saharan africa water uptake Kijoji, Abubakary A. Nchimbi-Msolla, Susan Kanyeka, Zakaria L. Klassen, Stephen P. Serraj, Rachid Henry, Amelia Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes |
| title | Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes |
| title_full | Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes |
| title_fullStr | Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes |
| title_full_unstemmed | Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes |
| title_short | Water extraction and root traits in Oryza sativa x Oryza glaberrima introgression lines under different soil moisture regimes |
| title_sort | water extraction and root traits in oryza sativa x oryza glaberrima introgression lines under different soil moisture regimes |
| topic | africa agronomic traits drought stress genetic variation introgression lines oryza glaberrima production rainfed rice roots soil chemicophysical properties soil water content sub-saharan africa water uptake |
| url | https://hdl.handle.net/10568/165697 |
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