Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.)
To develop superior rice varieties with improved yield in most rainfed areas of Asia/Africa, we started an introgression-breeding program for simultaneously improving yield and tolerances of multiple abiotic stresses. Using eight BC1 populations derived from a widely adaptable recipient and eight do...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Public Library of Science
2017
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| Online Access: | https://hdl.handle.net/10568/165082 |
| _version_ | 1855513410493480960 |
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| author | Ali, Jauhar Xu, Jianlong Gao, Yong-Ming Ma, Xiu-Fang Meng, Lijun Wang, Ying Pang, Yunlong Guan, Yong-Sheng Xu, Mei-Rong Revilleza, Jastin E. Franje, Neil J. Zhou, Shao-Chuan Li, Zhikang |
| author_browse | Ali, Jauhar Franje, Neil J. Gao, Yong-Ming Guan, Yong-Sheng Li, Zhikang Ma, Xiu-Fang Meng, Lijun Pang, Yunlong Revilleza, Jastin E. Wang, Ying Xu, Jianlong Xu, Mei-Rong Zhou, Shao-Chuan |
| author_facet | Ali, Jauhar Xu, Jianlong Gao, Yong-Ming Ma, Xiu-Fang Meng, Lijun Wang, Ying Pang, Yunlong Guan, Yong-Sheng Xu, Mei-Rong Revilleza, Jastin E. Franje, Neil J. Zhou, Shao-Chuan Li, Zhikang |
| author_sort | Ali, Jauhar |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | To develop superior rice varieties with improved yield in most rainfed areas of Asia/Africa, we started an introgression-breeding program for simultaneously improving yield and tolerances of multiple abiotic stresses. Using eight BC1 populations derived from a widely adaptable recipient and eight donors plus three rounds of phenotypic selection, we developed 496 introgression lines (ILs) with significantly higher yield under drought, salt and/or non-stress conditions in 5 years. Six new varieties were released in the Philippines and Pakistan and many more are being evaluated in multi-location yield trials for releasing in several countries. Marker-facilitated genetic characterization revealed three interesting aspects of the breeding procedure: (1) the donor introgression pattern in specific BC populations was characteristic; (2) introgression frequency in different genomic regions varied considerably, resulting primarily from strong selection for the target traits; and (3) significantly lower heterozygosity was observed in BC progenies selected for drought and salinity tolerance. Applying strong phenotypic selection under abiotic stresses in early segregating generations has major advantages for not only improving multiple abiotic stress tolerance but also achieving quicker homozygosity in early generations. This breeding procedure can be easily adopted by small breeding programs in developing countries to develop high-yielding varieties tolerant of abiotic stresses. The large set of trait-specific ILs can be used for genetic mapping of genes/QTL that affect target and non-target traits and for efficient varietal development by designed QTL pyramiding and genomics-based recurrent selection in our Green Super Rice breeding technology |
| format | Journal Article |
| id | CGSpace165082 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | Public Library of Science |
| publisherStr | Public Library of Science |
| record_format | dspace |
| spelling | CGSpace1650822025-05-14T10:23:47Z Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.) Ali, Jauhar Xu, Jianlong Gao, Yong-Ming Ma, Xiu-Fang Meng, Lijun Wang, Ying Pang, Yunlong Guan, Yong-Sheng Xu, Mei-Rong Revilleza, Jastin E. Franje, Neil J. Zhou, Shao-Chuan Li, Zhikang To develop superior rice varieties with improved yield in most rainfed areas of Asia/Africa, we started an introgression-breeding program for simultaneously improving yield and tolerances of multiple abiotic stresses. Using eight BC1 populations derived from a widely adaptable recipient and eight donors plus three rounds of phenotypic selection, we developed 496 introgression lines (ILs) with significantly higher yield under drought, salt and/or non-stress conditions in 5 years. Six new varieties were released in the Philippines and Pakistan and many more are being evaluated in multi-location yield trials for releasing in several countries. Marker-facilitated genetic characterization revealed three interesting aspects of the breeding procedure: (1) the donor introgression pattern in specific BC populations was characteristic; (2) introgression frequency in different genomic regions varied considerably, resulting primarily from strong selection for the target traits; and (3) significantly lower heterozygosity was observed in BC progenies selected for drought and salinity tolerance. Applying strong phenotypic selection under abiotic stresses in early segregating generations has major advantages for not only improving multiple abiotic stress tolerance but also achieving quicker homozygosity in early generations. This breeding procedure can be easily adopted by small breeding programs in developing countries to develop high-yielding varieties tolerant of abiotic stresses. The large set of trait-specific ILs can be used for genetic mapping of genes/QTL that affect target and non-target traits and for efficient varietal development by designed QTL pyramiding and genomics-based recurrent selection in our Green Super Rice breeding technology 2017-03-09 2024-12-19T12:54:42Z 2024-12-19T12:54:42Z Journal Article https://hdl.handle.net/10568/165082 en Open Access Public Library of Science Ali, Jauhar; Xu, Jian-Long; Gao, Yong-Ming; Ma, Xiu-Fang; Meng, Li-Jun; Wang, Ying; Pang, Yun-Long; Guan, Yong-Sheng; Xu, Mei-Rong; Revilleza, Jastin E.; Franje, Neil J.; Zhou, Shao-Chuan and Li, Zhi-Kang. 2017. Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.). PLoS ONE, Volume 12 no. 3 p. e0172515 |
| spellingShingle | Ali, Jauhar Xu, Jianlong Gao, Yong-Ming Ma, Xiu-Fang Meng, Lijun Wang, Ying Pang, Yunlong Guan, Yong-Sheng Xu, Mei-Rong Revilleza, Jastin E. Franje, Neil J. Zhou, Shao-Chuan Li, Zhikang Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.) |
| title | Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.) |
| title_full | Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.) |
| title_fullStr | Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.) |
| title_full_unstemmed | Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.) |
| title_short | Harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice (Oryza sativa L.) |
| title_sort | harnessing the hidden genetic diversity for improving multiple abiotic stress tolerance in rice oryza sativa l |
| url | https://hdl.handle.net/10568/165082 |
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