Agriculture

Structure and function of rice hybrid genomes reveal genetic basis and optimal performance of heterosis

Z. Gu, J. Gong, et al.

Dive into groundbreaking research on rice hybrid cultivars by Zhoulin Gu, Junyi Gong, and their colleagues. This study demonstrates how *indica-indica* hybrids are broadening genetic resources and enhancing hybrid performance through a genomic model. Uncover the secrets behind rice heterosis and its potential to boost global agricultural production.

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Playback language: English

Index

Abstract

Exploitation of crop heterosis is crucial for increasing global agriculture production. This study resequenced and phenotyped 2,839 rice hybrid cultivars and 9,839 segregation individuals. Findings indicate *indica-indica* hybrid improvement broadened genetic resources, pyramided favorable alleles, and collaboratively improved parents. Widespread genetic complementarity contributed to *indica-japonica* heterosis, with dominance effects more influential than overdominance. A genomic model was developed to predict hybrid performance. The data advances understanding and utilization of heterosis in rice.

Publisher

Nature Genetics

Published On

Oct 01, 2023

Authors

Zhoulin Gu, Junyi Gong, Zhou Zhu, Zhen Li, Qi Feng, Changsheng Wang, Yan Zhao, Qilin Zhan, Congcong Zhou, Ahong Wang, Tao Huang, Lei Zhang, Qilin Tian, Danlin Fan, Yiqi Lu, Qiang Zhao, Xuehui Huang, Shihua Yang, Bin Han

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