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草业学报 ›› 2021, Vol. 30 ›› Issue (8): 186-198.DOI: 10.11686/cyxb2020579

• 综合评述 • 上一篇    

禾本科植物落粒机理研究进展

谢文刚1(), 万依阳1, 张宗瑜1, 张俊超2   

  1. 1.兰州大学草地农业生态系统国家重点实验室,兰州大学农业农村部草牧业创新重点实验室,兰州大学草地农业科技学院,甘肃 兰州 730020
    2.西南民族大学青藏高原研究院,四川 成都 610041
  • 收稿日期:2020-12-16 修回日期:2021-01-19 出版日期:2021-07-09 发布日期:2021-07-09
  • 通讯作者: 谢文刚
  • 作者简介:Corresponding author. E-mail: xiewg@lzu.edu.cn
    谢文刚(1982-),男,四川资中人,教授,博士。E-mail: xiewg@lzu.edu.cn
  • 基金资助:
    科技部重点研发计划子课题(2019YFC0507702);甘肃省科技重大专项课题(19ZD2NA002);国家自然科学基金面上项目(31971751);青海省青藏高原优良牧草种质资源利用重点实验室开放课题(2020-ZJ-Y03)

Research progress on the seed-shattering mechanism of Poaceae plants

Wen-gang XIE1(), Yi-yang WAN1, Zong-yu ZHANG1, Jun-chao ZHANG2   

  1. 1.State Key Laboratory of Grassland Agro-ecosystems,Key Laboratory of Grassland Livestock Industry Innovation,Ministry of Agriculture and Rural Affairs,College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China
    2.Institute of Qinghai-Tibetan Plateau,Southwest University for Nationalities,Chengdu 610041,China
  • Received:2020-12-16 Revised:2021-01-19 Online:2021-07-09 Published:2021-07-09
  • Contact: Wen-gang XIE

摘要:

落粒性是野生植物为有效繁衍后代、扩大种群而形成的一种适应特性,但对种子生产可造成不利影响。离区的形成、发育和降解是植物落粒的直接原因,植物激素产生促进或抑制脱落的信号,细胞壁水解酶可引起离区细胞的降解,这些过程的发生受多个基因调控,且调控网络复杂。对于种子落粒的相关研究已在水稻、小麦等农作物中深入开展,而牧草领域则相对较少。综述禾本科植物落粒研究的最新进展,以期为禾本科牧草落粒机理深入挖掘以及品种选育提供理论参考。

关键词: 牧草, 种子, 离区, 落粒性, 分子机制

Abstract:

Seed shattering is an adaptive characteristic of wild plants for effective reproduction and population expansion, but it adversely affects seed production. The formation, development, and degradation of the abscission zone are the direct causes of seed shattering in plants. Plant hormones produce signals that promote or inhibit seed shattering. Cell wall hydrolases can cause the degradation of cells in the abscission zone. The occurrence of these processes is regulated by polygenes and the regulatory network is complex. Research on seed shattering has been carried out in rice, wheat, and other crops, but comparatively few studies have focused on forage grasses. In this paper, we review the latest advances in research on seed shattering in poaceous plants to provide a theoretical reference for in-depth exploration of seed-shattering mechanisms and species selection.

Key words: forage grass, seed, abscission zone, seed shattering, molecular mechanism