四川农业大学学报 ›› 2002, Vol. 20 ›› Issue (02): 84-87.doi: 10.16036/j.issn.1000-2650.2002.02.004

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三个新选玉米雄性不育胞质花药败育的超微结构观察

曹墨菊, 荣廷昭, 胡长远   

  1. 四川农业大学 玉米研究所, 四川 雅安 625014
  • 收稿日期:2001-06-04 出版日期:2002-06-30 发布日期:2017-03-06
  • 基金资助:
    国家"九五"育种攻关(96-002-02-05-07)项目资助;四川省玉米育种攻关(96-002-02-06-01)项目资助

Observation of Anther Ultra-structure about Three Novel Maize Cytoplasm Male Sterile Materials

CAO Mo-ju, RONG Ting-zhao, HU Chang-yuan   

  1. Maize Research Institute, Sichuan Agricultural University, Yaan 625014, Sichuan, China
  • Received:2001-06-04 Online:2002-06-30 Published:2017-03-06

摘要: 利用电子显微镜对3个新选玉米雄性不育胞质G、类2、类3的发育过程进行观察。从四分体时期开始,G、类2、类3的绒毡层细胞径向膨大,严重液泡化,有的内切壁及径向壁不解体,内切质膜外侧没有乌氏体产生,单核中期小孢子外壁发育不完全,G、类2、类3胞质的小孢子外壁都有不连续的基足层发育,而没有覆盖层发育,3种不育胞质的基足层形态各不相同,与C胞质的小孢子外壁也有不同。以上结果表明,G、类2、类3胞质属于C组,但三者相互之间及其与C胞质之间在败育进程及特点上有所不同。

关键词: 玉米, 细胞质雄性不育, 花药, 超微结构

Abstract: The abnormal developments begin at tetrad stage, such as radial expansion and excessive vacuolization of tapetal cells, the internal and radial walls do not collapse and the Ubish bodies outside inscribed plasmolemma in tapetal cells do not come into being, and the microspore exine does not form at intermediate microspore stage. The pollen abortion begins from tetrad stage to intermediate microspore stage and completes at intermediate microspore stage. All of these features are similar to that of C cytoplasm and different from cytoplasm T and S. At intermediate microspore stage, cytoplasm G, Lei2 and Lei3 have developed discontinuous nexine but have not formed the tactum of exine. However, the nexine of cytoplasm G has different morphological characters from cytoplasm Lei2 and Lei3, as well as from the double exine of microspore in cytoplasm C. These results indicate that G, Lei2 and Lei3 belong to group C but their abortion process or mechanism have some differences.

Key words: MAIZE, CYTOPLASM MALE STERILE, ANTHER, ULTRA-STRUCTURE

中图分类号: 

  • S513.032