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. 2018 Dec;16(6):393-396.
doi: 10.1016/j.gpb.2018.12.001. Epub 2018 Dec 13.

Development of the "Third-Generation" Hybrid Rice in China

Haiyang Wang  1 , Xing Wang Deng  2
Affiliations

Development of the "Third-Generation" Hybrid Rice in China

Haiyang Wang et al. Genomics Proteomics Bioinformatics. 2018 Dec.

Abstract

Rice is a major cereal crop for China. The development of the "three-line" hybrid rice system based on cytoplasmic male sterility in the 1970s (first-generation) and the "two-line" hybrid rice system based on photoperiod- and thermo-sensitive genic male-sterile lines (second-generation) in the 1980s has contributed significantly to rice yield increase and food security in China. Here we describe the development and implementation of the "third-generation" hybrid rice breeding system that is based on a transgenic approach to propagate and utilize stable recessive nuclear male sterile lines, and as such, the male sterile line and hybrid rice produced using such a system is non-transgenic. Such a system should overcome the intrinsic problems of the "first-generation" and "second-generation" hybrid rice systems and hold great promise to further boost production of hybrid rice and other crops.

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Figures

Figure 1
Figure 1
Diagram scheme of the “third-generation” hybrid rice technology
Figure 2
Figure 2
Development of Zhen18B maintainer line and Zhen18A male sterile line A. Phenotype of the osnp1 mutant after bolting. B. Phenotype of Zhen18B maintainer plant after bolting. C. Panicle of Zhen18B maintainer plant under bright field (BF). D. Panicle of Zhen18B maintainer plant under a red fluorescence filter (RFP). The image was adopted from .
See this image and copyright information in PMC

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