摘要
观察了1种新型小麦细胞质雄性不育系（CMS）──（野生二粒小麦）中国春CMS花药和花粉败育的细胞学过程。结果表明，①不育系在小孢子发育至单核晚期以前，除了雄蕊心皮化发生率（37．2％）较高外，其花药和花粉发育绝大多数与同核保持系相似，是正常的，仅少量表现异常而导致败育。异常现象主要有：雄蕊心皮化，药室合并，药壁组织喙状突起，绒毡层异常，小孢子母细胞粘连，减数分裂异常，小孢子异常等。②不育系花粉败育在发育各个时期都发生，但大量败育发生在单核晚期，小孢子不能进入配子体发育，花粉以典败为主。
Anther and pollen abortion in male-sterile wheat('cs' ) having Triticum dicoccoides-nudigl cytoplasm were studied in this paper. The results obtained were summarized as follows. (l ) Before later stage of uninucleate, 37.2 percent of stamen were pistillody,except it,most of the microspore and anther of male-sterile line developed in the similiar manner to that of maintainer line,and only a few of them revealed various abnormalities and led to the abortion. (2) Pollen abortion in male-sterile line might occurin various stages of microsporogenesis. However,most of pollen in male-sterile line degenerated at later uninucleate stage,so that the microspores at this stage failed to carryon the male gametogenesis in many cases.
出处
《武汉植物学研究》
CSCD
1998年第3期193-196,共4页
Journal of Wuhan Botanical Research
基金
荆州师范高等专科学校硕士研究生科研起动基金项目
关键词
花药
花粉败育
细胞学观察
细胞质雄性不育
小麦
(Triticum dicoccoides-nudigl)cs, Anther and pollen abortion, Cytological observation, Cytoplasmic male sterility
