白菜细胞核雄性不育两用系的细胞学观察

The Cytomorphology of Microsporogenesis in Genie Male Sterile A/B Line of Chinese Cabbage (Brassica campestris L. ssp. chinensis Makino var. communis Tsen et Lee)

对白菜细胞核雄性不育两用系进行了花粉母细胞减数分裂和小孢子发育的细胞学观察,实验结果初步表明不育系小孢子败育时期在减数分裂末期Ⅱ这一阶段,败育方式是不能形成四分体,随后小孢子内颗粒状的内含物不断外溢,直至成为一个空壳,药室萎缩,导致花粉败育。

Cytological morphology studies were made in the development of anther and microsporogenesis in A line and B line of Chinese cabbage-pak-choi. In A line, pollen abortion happened in pollen mother cell meiosis stage. The tetrads couldn't be formed in the anther of A line plant, and then the pollen mother cells spread from the center of the anther chamber. With the development of pollen mother cells, the content of the cells leaked, and in the end the pollen mother cells became empty.