Exploration of rice yield potential: Decoding agronomic and physiological traits

Rice grain yield is determined by three major “visible” morphological traits: grain weight, grain number per panicle, and effective tiller number, which are affected by a series of “invisible” physiological factors including nutrient use efficiency and photosynthetic efficiency. In the past few deca...

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Bibliographic Details
Published in:The Crop journal 2021-06, Vol.9 (3), p.577-589
Main Authors: Li, Gengmi, Tang, Jiuyou, Zheng, Jiakui, Chu, Chengcai
Format: Article
Language:English
Subjects:
Molecular breeding
Nitrogen use efficiency
Photosynthetic efficiency
Rice
Yield improvement
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Summary:Rice grain yield is determined by three major “visible” morphological traits: grain weight, grain number per panicle, and effective tiller number, which are affected by a series of “invisible” physiological factors including nutrient use efficiency and photosynthetic efficiency. In the past few decades, substantial progress has been made on elucidating the molecular mechanisms underlying grain yield formation, laying a solid foundation for improving rice yield by molecular breeding. This review outlines our current understanding of the three morphological yield-determining components and summarizes major progress in decoding physiological traits such as nutrient use efficiency and photosynthetic efficiency. It also discusses the integration of current knowledge about yield formation and crop improvement strategies including genome editing with conventional and molecular breeding.
ISSN:2214-5141
2214-5141
DOI:10.1016/j.cj.2021.03.014