Evaluation of rice breeding lines containing root QTLs under different water management environments
Investigating effects of introgressed root-trait QTLs in field environments is a challenging task. Seven rice BC3F4 lines with at least one of six QTLs for root vertical distribution (DRO1, DRO2, DRO3, qFSR4, qRL6.1, QRO2) introgressed into a popular Colombian variety, FEDEARROZ 60, were evaluated f...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/173772 |
| _version_ | 1855521460741734400 |
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| author | Deshmukh, Vivek Kamoshita, Akihiko Amézquita, Nelson Espinosa, Natalia Ogawa, Satoshi Kitomi, Yuka Uga, Yusaku |
| author_browse | Amézquita, Nelson Deshmukh, Vivek Espinosa, Natalia Kamoshita, Akihiko Kitomi, Yuka Ogawa, Satoshi Uga, Yusaku |
| author_facet | Deshmukh, Vivek Kamoshita, Akihiko Amézquita, Nelson Espinosa, Natalia Ogawa, Satoshi Kitomi, Yuka Uga, Yusaku |
| author_sort | Deshmukh, Vivek |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Investigating effects of introgressed root-trait QTLs in field environments is a challenging task. Seven rice BC3F4 lines with at least one of six QTLs for root vertical distribution (DRO1, DRO2, DRO3, qFSR4, qRL6.1, QRO2) introgressed into a popular Colombian variety, FEDEARROZ 60, were evaluated for changes in root traits together with a BC3F4 line lacking root QTLs and the parent FEDEARROZ 60. A flooded experiment with deep-flooded and shallow-flooded treatments and an aerobic experiment using a raised-bed system were repeated in two seasons in Central Colombia. In the flooded experiment, ST604_302, containing DRO2, showed the highest root weight and root weight proportion in the 20–30-cm soil layer. The average root weight and proportion of roots at the 10–20-cm soil depth and average root weight at the 20–30-cm depth were significantly greater for the lines containing DRO2 than for those without. In the aerobic experiment, the four lines with DRO2 had higher deep-root ratios than the other genotypes. In the aerobic experiment, a higher deep-root ratio did not lead to greater root weight at either depth examined; the root weight parameters showed genotype × season interaction, and genotype had no significant effect on root weight. In the flooded experiment, the four DRO2-introgressed lines showed higher root length density below 10-cm depth than other lines in the deep-flooded treatment but not in the shallow-flooded treatment. These results showed limited but positive changes in deep-root growth in field environments through root-QTL introgression, and revealed interactions with water management and season. |
| format | Journal Article |
| id | CGSpace173772 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| record_format | dspace |
| spelling | CGSpace1737722025-11-11T17:46:49Z Evaluation of rice breeding lines containing root QTLs under different water management environments Deshmukh, Vivek Kamoshita, Akihiko Amézquita, Nelson Espinosa, Natalia Ogawa, Satoshi Kitomi, Yuka Uga, Yusaku rooting water scarcity Investigating effects of introgressed root-trait QTLs in field environments is a challenging task. Seven rice BC3F4 lines with at least one of six QTLs for root vertical distribution (DRO1, DRO2, DRO3, qFSR4, qRL6.1, QRO2) introgressed into a popular Colombian variety, FEDEARROZ 60, were evaluated for changes in root traits together with a BC3F4 line lacking root QTLs and the parent FEDEARROZ 60. A flooded experiment with deep-flooded and shallow-flooded treatments and an aerobic experiment using a raised-bed system were repeated in two seasons in Central Colombia. In the flooded experiment, ST604_302, containing DRO2, showed the highest root weight and root weight proportion in the 20–30-cm soil layer. The average root weight and proportion of roots at the 10–20-cm soil depth and average root weight at the 20–30-cm depth were significantly greater for the lines containing DRO2 than for those without. In the aerobic experiment, the four lines with DRO2 had higher deep-root ratios than the other genotypes. In the aerobic experiment, a higher deep-root ratio did not lead to greater root weight at either depth examined; the root weight parameters showed genotype × season interaction, and genotype had no significant effect on root weight. In the flooded experiment, the four DRO2-introgressed lines showed higher root length density below 10-cm depth than other lines in the deep-flooded treatment but not in the shallow-flooded treatment. These results showed limited but positive changes in deep-root growth in field environments through root-QTL introgression, and revealed interactions with water management and season. 2024 2025-03-21T07:23:25Z 2025-03-21T07:23:25Z Journal Article https://hdl.handle.net/10568/173772 en Open Access application/pdf Deshmukh, V.; Kamoshita, A.; Amézquita, N.; Espinosa, N.; Ogawa, S.; Kitomi, Y.; Uga, Y. (2024) Evaluation of rice breeding lines containing root QTLs under different water management environments. Plant Root 18: p. 22-34. ISSN: 1881-6754 |
| spellingShingle | rooting water scarcity Deshmukh, Vivek Kamoshita, Akihiko Amézquita, Nelson Espinosa, Natalia Ogawa, Satoshi Kitomi, Yuka Uga, Yusaku Evaluation of rice breeding lines containing root QTLs under different water management environments |
| title | Evaluation of rice breeding lines containing root QTLs under different water management environments |
| title_full | Evaluation of rice breeding lines containing root QTLs under different water management environments |
| title_fullStr | Evaluation of rice breeding lines containing root QTLs under different water management environments |
| title_full_unstemmed | Evaluation of rice breeding lines containing root QTLs under different water management environments |
| title_short | Evaluation of rice breeding lines containing root QTLs under different water management environments |
| title_sort | evaluation of rice breeding lines containing root qtls under different water management environments |
| topic | rooting water scarcity |
| url | https://hdl.handle.net/10568/173772 |
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