Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities
Availability of irrigation water is becoming a major limiting factor in rice cultivation. Production in rainfed areas is affected in particular by drought events, as these areas are commonly planted to high-yielding drought-susceptible rice (Oryza sativa L.) varieties. The use of bulk segregant anal...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2014
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| Online Access: | https://hdl.handle.net/10568/165548 |
| _version_ | 1855533306850836480 |
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| author | Dixit, Shalabh Singh, Anshuman Cruz, Ma Teresa Sta Maturan, Paul T. Amante, Modesto Kumar, Arvind |
| author_browse | Amante, Modesto Cruz, Ma Teresa Sta Dixit, Shalabh Kumar, Arvind Maturan, Paul T. Singh, Anshuman |
| author_facet | Dixit, Shalabh Singh, Anshuman Cruz, Ma Teresa Sta Maturan, Paul T. Amante, Modesto Kumar, Arvind |
| author_sort | Dixit, Shalabh |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Availability of irrigation water is becoming a major limiting factor in rice cultivation. Production in rainfed areas is affected in particular by drought events, as these areas are commonly planted to high-yielding drought-susceptible rice (Oryza sativa L.) varieties. The use of bulk segregant analysis (BSA), taking grain yield (GY) as a selection criterion, has resulted in the identification of several large-effect QTL. A QTL mapping study was undertaken on a BC1F3:4 population developed from the cross IR55419-04/2*TDK1 with the aim of identifying large-effect QTL in the background of TDK1, a popular variety from Lao PDR.The study identified three QTL—qDTY 3.1 (RM168-RM468), qDTY 6.1 (RM586-RM217), and qDTY 6.2 (RM121-RM541)—for grain yield under drought. qDTY 3.1 and qDTY 6.1 , showed consistent effect across seasons under lowland drought-stress conditions while qDTY 6.1 and qDTY 6.2 showed effect under both upland and lowland drought conditions. The test of QTL effect, conducted through a QTL class analysis, showed the complimentary nature of qDTY 3.1 and qDTY 6.1 . Both QTL showed specific patterns of effect across different maturity groups within the mapping population and higher stability for grain yield was seen across stress levels for lines with both QTLs as compared to those with single or no QTL.The study offers a clear understanding of large-effect QTL for grain yield under drought and their effect as individual QTL and in various combinations. The study also opens up an opportunity to develop a drought-tolerant version of TDK1 through marker-assisted backcross breeding and has led to a large-scale QTL pyramiding program aiming to combine these QTL with Sub1 in the background of TDK1 as recipient variety. |
| format | Journal Article |
| id | CGSpace165548 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1655482025-05-14T10:24:19Z Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities Dixit, Shalabh Singh, Anshuman Cruz, Ma Teresa Sta Maturan, Paul T. Amante, Modesto Kumar, Arvind Availability of irrigation water is becoming a major limiting factor in rice cultivation. Production in rainfed areas is affected in particular by drought events, as these areas are commonly planted to high-yielding drought-susceptible rice (Oryza sativa L.) varieties. The use of bulk segregant analysis (BSA), taking grain yield (GY) as a selection criterion, has resulted in the identification of several large-effect QTL. A QTL mapping study was undertaken on a BC1F3:4 population developed from the cross IR55419-04/2*TDK1 with the aim of identifying large-effect QTL in the background of TDK1, a popular variety from Lao PDR.The study identified three QTL—qDTY 3.1 (RM168-RM468), qDTY 6.1 (RM586-RM217), and qDTY 6.2 (RM121-RM541)—for grain yield under drought. qDTY 3.1 and qDTY 6.1 , showed consistent effect across seasons under lowland drought-stress conditions while qDTY 6.1 and qDTY 6.2 showed effect under both upland and lowland drought conditions. The test of QTL effect, conducted through a QTL class analysis, showed the complimentary nature of qDTY 3.1 and qDTY 6.1 . Both QTL showed specific patterns of effect across different maturity groups within the mapping population and higher stability for grain yield was seen across stress levels for lines with both QTLs as compared to those with single or no QTL.The study offers a clear understanding of large-effect QTL for grain yield under drought and their effect as individual QTL and in various combinations. The study also opens up an opportunity to develop a drought-tolerant version of TDK1 through marker-assisted backcross breeding and has led to a large-scale QTL pyramiding program aiming to combine these QTL with Sub1 in the background of TDK1 as recipient variety. 2014-12 2024-12-19T12:55:11Z 2024-12-19T12:55:11Z Journal Article https://hdl.handle.net/10568/165548 en Springer Dixit, Shalabh; Singh, Anshuman; Sta Cruz, Ma Teresa; Maturan, Paul T; Amante, Modesto and Kumar, Arvind. 2014. Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities. BMC Genet, Volume 15, no. 1 |
| spellingShingle | Dixit, Shalabh Singh, Anshuman Cruz, Ma Teresa Sta Maturan, Paul T. Amante, Modesto Kumar, Arvind Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities |
| title | Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities |
| title_full | Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities |
| title_fullStr | Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities |
| title_full_unstemmed | Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities |
| title_short | Multiple major QTL lead to stable yield performance of rice cultivars across varying drought intensities |
| title_sort | multiple major qtl lead to stable yield performance of rice cultivars across varying drought intensities |
| url | https://hdl.handle.net/10568/165548 |
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