Chinese Bulletin of Botany ›› 2023, Vol. 58 ›› Issue (3): 359-372.DOI: 10.11983/CBB23012

• INVITED REVIEW • Previous Articles     Next Articles

Genetic Mechanisms and Breeding Utilization of Grain Number Per Panicle in Rice

Yuping Yan1,2, Xiaoqi Yu1,2(), Deyong Ren2, Qian Qian2   

  1. 1State Key Laboratory of Rice Biology and Breeding/Institute of Crop Science, Zhejiang University, Hangzhou 310058, China
    2State Key Laboratory of Rice Biology and Breeding/China National Rice Research Institute, Hangzhou 311400, China
  • Received:2023-02-04 Accepted:2023-04-18 Online:2023-05-01 Published:2023-05-17
  • Contact: *E-mail:

Abstract: As one of the key factors affecting rice yield, the grain number per panicle has always attracted the attention of breeders. The formation of grain number per panicle is a complex biological process, which is regulated by many genes. According to their impact on phenotype, we roughly divide these genes into three categories: related to the number of branches, related to panicle type and related to spikelet determination. In this paper, we summarized the genetic regulation mechanisms of the grain number per panicle-related genes, and put forth the strategies for their use in high yield breeding of rice.

Key words: rice, yield, grain number per panicle, genetic mechanism, breeding