水稻穗发育特征及遗传调控进展

Advances in Developmental Characteristics of Panicle and Genetic Regulation of Panicle Architecture in Rice

穗型直接影响水稻(Oryza sativa)产量,穗型改良可有效提高产量,故穗型改良一直是水稻遗传改良的重要目标之一。本文首先总结水稻穗的结构与特征、穗发育的一般过程,以及综述控制水稻穗型相关基因;接下来,阐述直立穗基因DEP1协同提高产量和氮肥利用效率的分子机制;最后,系统梳理目前穗型基因研究存在的问题,并对未来水稻穗型研究领域的关键科学问题和核心技术进行展望。

Panicle architecture profoundly affects the rice(Oryza sativa) yield and plays an important role in enhancing grain yield. Panicle architecture improvement has been one of the key targets of rice genetic improvement. In this review, the structure and characteristics of rice panicle and the general progress of panicle development were firstly introduced. Genes associated to rice panicle architecture were also summarized. Moreover, it elucidates the molecular mechanism of the simultaneous regulation of yield and nitrogen usage efficiency by DEP1 gene. Finally, the current problems existing in the study of panicle architecture genes were sort out and the key scientific problems and core technologies in the field of rice panicle architecture in the future were prospected.