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Author Gao Z.Y., Zhao S.C., He W.M., Guo L.B., Peng Y.L., Wang J.J., Guo X.S., Zhang X.M., Rao Y.C., Zhang C., Dong G.J., Zheng F.Y., Lu C.X., Hu J., Zhou Q., Liu H.J., Wu H.Y., Xu J., Ni P.X., Zeng D.L., Liu D.H., Tian P., Gong L.H., Ye C., Zhang G.H., Wang J., Tian F.K., Xue D.W., Liao Y., Zhu L., Chen M.S., Li J.Y., Cheng S.H., Zhang G.Y., Wang J., Qian Q.
Title Dissecting yield-associated loci in super hybrid rice by resequencing recombinant inbred lines and improving parental genome sequences.
The growing world population and shrinkage of arable land demand yield improvement of rice, one of the most important staple crops. To elucidate the genetic basis of yield and uncover its associated loci in rice, we resequenced the core recombinant inbred lines of Liang-You-Pei-Jiu, the widely cultivated super hybrid rice, and constructed a high-resolution linkage map. We detected 43 yield-associated quantitative trait loci, of which 20 are unique. Based on the high-density physical map, the genome sequences of paternal variety 93-11 and maternal cultivar PA64s of Liang-You-Pei-Jiu were significantly improved. The large recombinant inbred line population combined with plentiful high-quality single nucleotide polymorphisms and insertions/deletions between parental genomes allowed us to fine-map two quantitative trait loci, qSN8 and qSPB1, and to identify days to heading8 and lax panicle1 as candidate genes, respectively. The quantitative trait locus qSN8 was further confirmed to be days to heading8 by a complementation test. Our study provided an ideal platform for molecular breeding by targeting and dissecting yield-associated loci in rice.
Journal Proc. Natl. Acad. Sci. U.S.A.
Country China
Volume 110(35)
Pages 14492-7
Year 2013
PubMed ID 23940322
PubMed Central ID -
DOI 10.1073/pnas.1306579110
Gene HD5 LAX1
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain
Stages in Each Organ
- Muant Lines (Gene)
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -