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Updated: Sep 29, 2025

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Published on: January 3, 2025
Grain Size Associated Genes and the Molecular Regulatory Mechanism in Rice
Hongzhen Jiang1, Anpeng Zhang2, Xintong Liu1
1School of Agriculture, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China.
Abstract:
Grain size is a quantitative trait that is controlled by multiple genes. It is not only a yield trait, but also an important appearance quality of rice. In addition, grain size is easy to be selected in evolution, which is also a significant trait for studying rice evolution. In recent years, many quantitative trait loci (QTL)/genes for rice grain size were isolated by map-based cloning or genome-wide association studies, which revealed the genetic and molecular mechanism of grain size regulation in part. Here, we summarized the QTL/genes cloned for grain size and the regulation mechanism with a view to provide the theoretical basis for improving rice yield and breeding superior varieties.
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