中文摘要：

对广西含笑的小孢子发生和雄配子体形成过程进行了解剖学研究。广西含笑的花药具4个花粉囊,花药壁由表皮、药室内壁、中层（3~5层）和绒毡层（1~2层）组成。绒毡层为腺质绒毡层,细胞具2至多核,到花粉成熟时自溶消失。小孢子母细胞减数分裂的胞质分裂为修饰性同时型,四分体排列方式为交叉型、对称型、＂T＂型（极少）,成熟花粉粒具单沟,散粉时为二细胞型。在200个样品中,约有30%花药的小孢子母细胞在减数分裂前败育,还有40%的花药具有大量萎缩变形的花粉粒,花粉萌发率最高值只有25%。

英文摘要：

Microsporogenesis and male gametophyte formation of Michelia guangxiensis were first observed in this paper.Anthers are tetrasporangiate and anther wall is composed of epidermis,fibrous endothecium,middle layer（3-5 layers）and tapetum（1-2 layers）.The tapetum is of glandular type with 2 or more nucleus,which degenerate and finally disappear when the pollens are mature.Cytokinesis in meiosis is modified simultaneous type,resulting in decussate,isobilateral or T-shaped（rarely）tetrads.Pollen is monocolpate and sheds at the 2-cell stage.Among the 200 samples,the microspore mother cells in 30% anthers degenerate before meiosis and the microspores in 40% anthers degenerate seriously.The highest pollen germination rate is 25% only.