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Rice heterosis: quantitatively characterized and optimized hybrid breeding

We re-sequenced and phenotyped 2,839 rice hybrid cultivars and 9,839 F2 individuals from elite hybrids. Based on the dataset, the genetic improvement during rice hybrid breeding was investigated, and the genetic basis underlying strong heterosis was quantitatively evaluated. Furthermore, a genomic selection model was constructed to optimize heterotic combinations.

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Fig. 1: Quantitative analysis of heterotic loci and validation of genomic selection model.

References

  1. Krieger, U., Lippman, Z. B. & Zamir, D. The flowering gene SINGLE FLOWER TRUSS drives heterosis for yield in tomato. Nat. Genet. 42, 459–463 (2010). This paper reports a tomato flowering gene sft, which drives yield heterosis by over-dominance effect.

    Article  CAS  PubMed  Google Scholar 

  2. Wang, B. et al. De novo genome assembly and analyses of 12 founder inbred lines provide insights into maize heterosis. Nat. Genet. 55, 312–323 (2023). This paper reports a significant positive correlation between the number of structural variants in parental lines and better parent heterosis of grain yield per plant in maize.

    Article  CAS  PubMed  Google Scholar 

  3. Huang, X. et al. Genomic architecture of heterosis for yield traits in rice. Nature 537, 629–633 (2016). This paper provides support for positive partial dominance of heterozygous loci for yield-associated traits.

    Article  CAS  PubMed  Google Scholar 

  4. Birchler, J. A. & Veitia, R. A. The gene balance hypothesis: implications for gene regulation, quantitative traits and evolution. New Phytol. 186, 54–62 (2010). A review article that describes a quantitative genetic framework involving several genes that together explain heterosis.

    Article  CAS  PubMed  Google Scholar 

  5. Qian, Q., Guo, L., Smith, S. M. & Li, J. Breeding high-yield superior quality hybrid super rice by rational design. Natl Sci. Rev. 3, 283–n294 (2016). A review article that describes strong heterosis and great breeding potential of intersubspecific hybrids.

    Article  Google Scholar 

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This is a summary of: Gu, Z. et al. Structure and function of rice hybrid genomes reveal genetic basis and optimal performance of heterosis. Nat. Genet. https://doi.org/10.1038/s41588-023-01495-8 (2023).

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Rice heterosis: quantitatively characterized and optimized hybrid breeding. Nat Genet 55, 1619–1620 (2023). https://doi.org/10.1038/s41588-023-01496-7

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