Review and Progress
Research Progress on the Genes Controlling Grain Number in Rice
1 Graduate School of Hunan University, Long Ping Branch, Changsha, 410125
2 Hunan Hybrid Rice Research Center and State Key Laboratory of Hybrid Rice, Changsha, 410125
Rice Genomics and Genetics, 2020, Vol. 11, No. 8 doi: 10.5376/rgg.2020.11.0008
Received: 31 Aug., 2020 Accepted: 07 Sep., 2020 Published: 25 Sep., 2020
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This article was first published in Molecular Plant Breeding in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:
Dong H., Li Y.X., Song S.F., Wang T.K., Qiu M.D., Zhang L.C., Li L., Li Y.X., and Li L., 2020, Research progress on the genes controlling grain number in rice, 11(8): 1-8 (doi: 10.5376/rgg.2020.11.0008)
As one of the important factors of rice yield, grains number per panicle has gained wide attention from breeders. The formation of grains number per panicle is a complex biological process, which controlled by many factors, such as spike type, spikelet differentiation rate, and spike differentiation process, etc. With the development of plant functional genomics-related techniques, some progress has been made in the cloning of rice panicle number gene and the study of its mechanism. Recently, the cloning and mechanism study of genes controlling rice grain number has made great progress. In this review, we summarize systematically the recent research progress on the genes controlling grain number from Spike meristem development and spike type Etc . We also discuss the problems of current works and future research directions，to provide theoretical basis for rice high-yield breeding.
Rice; Yield; Grains number per panicle; Gene function; Molecular mechanism