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Genetic Identification of Quantitative Trait Loci for Contents of Mineral Nutrients in Rice Grain
Article first published online: 6 OCT 2008
DOI: 10.1111/j.1744-7909.2008.00730.x
© 2008 Institute of Botany, the Chinese Academy of Sciences
Additional Information
How to Cite
Garcia-Oliveira, A. L., Tan, L., Fu, Y. and Sun, C. (2009), Genetic Identification of Quantitative Trait Loci for Contents of Mineral Nutrients in Rice Grain. Journal of Integrative Plant Biology, 51: 84–92. doi: 10.1111/j.1744-7909.2008.00730.x
Publication History
- Issue published online: 29 DEC 2008
- Article first published online: 6 OCT 2008
- Received 20 Mar. 2008 Accepted 15 May 2008
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Keywords:
- introgression lines;
- mineral elements;
- Oryza sativa;
- Oryza rufipogon;
- quantitative trait loci
Abstract
In present study, Fe, Zn, Mn, Cu, Ca, Mg, P and K contents of 85 introgression lines (ILs) derived from a cross between an elite indica cultivar Teqing and the wild rice (Oryza rufipogon) were measured by inductively coupled argon plasma (ICAP) spectrometry. Substantial variation was observed for all traits and most of the mineral elements were significantly positive correlated or independent except for Fe with Cu. A total of 31 putative quantitative trait loci (QTLs) were detected for these eight mineral elements by single point analysis. Wild rice (O. rufipogon) contributed favorable alleles for most of the QTLs (26 QTLs), and chromosomes 1, 9 and 12 exhibited 14 QTLs (45%) for these traits. One major effect of QTL for zinc content accounted for the largest proportion of phenotypic variation (11%–19%) was detected near the simple sequence repeats marker RM152 on chromosome 8. The co-locations of QTLs for some mineral elements observed in this mapping population suggested the relationship was at a molecular level among these traits and could be helpful for simultaneous improvement of these traits in rice grain by marker assisted selection.