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| Content Provider | Springer Nature Link |
|---|---|
| Author | Bimpong, Isaac Kofi Serraj, Rachid Chin, Joong Hyoun Ramos, Joie Mendoza, Evelyn M. T. Hernandez, Jose E. Mendioro, Merlyn S. Brar, Darshan S. |
| Copyright Year | 2011 |
| Abstract | Drought is a major abiotic stress that limits rice productivity in rain-fed and upland ecosystems. African rice, Oryza glaberrima, has low yields but is tolerant to drought and other stresses. We evaluated 513 BC$_{2}$F$_{3}$ progenies from alien introgression lines (AILs) that were derived from crosses of Oryza sativa (IR64) × O. glaberrima. They were assessed for yield and other traits when grown under drought at two locations. Such conditions reduced grain production by 59% compared with the recurrent parent (IR64). However, 33 AILs had higher yields, thus demonstrating their potential as genetic material for transferring drought-related traits from O. glaberrima to O. sativa. A set of 200 AILs was selectively genotyped with 173 simple sequence repeat and sequenced tagged site markers. Molecular analysis showed that a mean of 4.5% of the O. glaberrima genome was introgressed in BC$_{2}$F$_{3}$ AILs. Our analysis revealed 33 quantitative trait loci (QTLs; including 10 novel) for different traits. O. glaberrima contributed 50% of the alleles to those newly identified QTLs, with one for grain yield per plant (ypp9.1) being new. A QTL at RM208 on chromosome 2 positively affected yield under stress, accounting for 22% of the genetic variation. Our identification of drought-related QTLs for yield and yield components will be useful to future research efforts in marker-assisted selection. |
| Starting Page | 237 |
| Ending Page | 250 |
| Page Count | 14 |
| File Format | |
| ISSN | 12269239 |
| Journal | Journal of Plant Biology |
| Volume Number | 54 |
| Issue Number | 4 |
| e-ISSN | 18670725 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2011-04-07 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | AIL Alien introgression line Drought Oryza glaberrima O. sativa QTL SSR STS Plant Sciences Plant Genetics & Genomics Plant Breeding/Biotechnology Plant Ecology Plant Systematics/Taxonomy/Biogeography |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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