期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2003

29

2

109-111

10.3321/j.issn:1007-1032.2003.02.007

99C167:湖南省教育厅科学研究项目

本校为第一机构

为探明玉米GDS不育系雄性败育的细胞学机理,用光镜对新育成的玉米GDS细胞质雄性不育系及其同型保持系BG的小孢子发育进行了细胞学观察.结果表明,GDS不育系小孢子败育发生的时间较早,在小孢子母细胞减数分裂前期Ⅰ就表现出败育的特征,不能通过减数分裂.败育成2种形式:1) 绒毡层异常膨大,小孢子母细胞浓缩解体;2) 绒毡层液泡化程度低,小孢子母细胞早期开始浓缩解体.

In order to define the cytological mechanism of cytoplasmic male sterility of GDS,the cytological characteristics of new malesterile line GDS in maize and its maintainer line BG are observed by optical microscope. Results show that microspore abortion occurs relatively early in malesterile line GDS,shown in early stage Ⅰ of microspore maternal cell meiosis,which means microspore maternal cell fails to meiosis.There are two types of abortion,i.e,1)fine layers expanding abnormally and microspore maternal cells condensing to disjoint and 2)fi...