K型小麦细胞质雄性不育系助细胞无配子生殖的细胞学研究  

Studies on The Cytology of The Synergid Apoganmy by Ae。Kotschyi Cytoplasm Mak-Sterile in Common Wheat

作　　者：孙善英[1] 杨天章[1] 刘晚苟[1] 

机构地区：[1]西北农业大学,南京植物研究所

出　　处：《西北农业大学学报》1994年第1期29-34,共6页Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)

基　　金：国家自然科学基金

摘　　要：从细胞学方面研究了Ｋ型小麦雄性不育系助细胞的无配子生殖。结果表明，在延迟授粉子房的胚囊中，助细胞之一首先体积增大，细胞质变浓，核及核仁也增大，接着进入有丝分裂，第一次分裂后形成二细胞原胚，发育为各种不同类型的球形胚；球形胚再发育为梨形胚；梨形胚再发育为分化期胚，最后形成成熟胚，卵细胞孤雄生殖频率很低，过程与助细胞无配子生殖相似。This paper studiyes on the cytology of the synergid apogamy by Ae.kotschyi cytoplasm male-sterile in common wheat.The results are as follows:One ofthe two synergids in the embryo-sac, under the condition of delayed-pollination and non-pollination,Its volume increased first,the cytoplasm got thicker,the vacuole dis-apered,the nucleus and nucleolus increased too,thenit got into the mitosis stage so asso from two cells proembryo and develop in various irregular types such as global em- bryo,pear-shaped embryo and differentiation stage embryo,and finally,it became mutureembryo. The frequency of the egg-cell partherogenesis is minimum,and its developingprocess is similar to the synergid apogamy.

关 键 词：助细胞 无配子生殖 小麦 三系配套 

分 类 号：S512.103[农业科学—作物学]