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Review | Open Access

Understanding the genetic basis of rice heterosis: Advances and prospects

Sinan Zhanga, Xuehui Huanga( ), Bin Hanb( )
Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
National Center for Gene Research, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200233, China
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Abstract

Heterosis, which describes the superior vigor and yield of F1 hybrids with respect to their parents, is observed in many rice hybrid crosses. The exploitation of heterosis is a great leap in the history of rice breeding. With advances in genomics and genetics, high-resolution mapping and functional identification of heterosis-associated loci have been performed in rice. Here we summarize advances in understanding the genetic basis of grain yield heterosis in hybrid rice and provide a vision for the genetic study and breeding application of rice heterosis in the future.

Keywords

BreedingHeterosisGenetic basisHybrid rice

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The Crop Journal
Volume 9 Issue 3,
June 2021
Pages 688-692
DOI: 10.1016/j.cj.2021.03.011
Cite this article:
Zhang S, Huang X, Han B. Understanding the genetic basis of rice heterosis: Advances and prospects. The Crop Journal, 2021, 9(3): 688-692. https://doi.org/10.1016/j.cj.2021.03.011

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Received: 01 December 2020
Revised: 09 March 2021
Accepted: 29 March 2021
Published: 21 April 2021
© 2021 Crop Science Society of China and Institute of Crop Science, CAAS.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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