运用石蜡切片技术对桂花银桂品种群中‘晚银桂’的小孢子发生和雄配子体发育过程进行了研究,结果表明:‘晚银桂’雄蕊2枚,偶见3枚,花药4室;花药壁发育为双子叶型;绒毡层为腺质型,细胞具1~2核;同一小花、同一药室内小孢子母细胞减数分裂同步或否,胞质分裂同时型;小孢子四分体多呈四面体型,少数呈十字交叉型;成熟花粉粒为二细胞型,近圆形,具3条萌发沟,发育过程中可见败育现象。 The microsporogenesis and male gametophyte development of ’Guiyang’ were studied by paraffin section technique. The results showed that there were 2 stamens in late-stage Guiyang-Gui, with 3 occasional flowers and 4 anthers in anther. Anther Wall development of the dicotyledon type; tapetum is glandular type, cells with 1 or 2 nuclei; the same flower, same megaspore mother cell meiosis synchronous or not, cytokinesis simultaneously; microspore tetrad Mostly tetrahedral, a few were cross-shaped; mature pollen grains of two-cell type, nearly circular, with three germination ditch, abortion phenomenon can be seen in the development process.