毛百合小孢子发生和雄配子体发育过程的解剖学研究

在显微水平上对毛百合小孢子发生和雄配子体的发育过程与不同发育阶段花蕾的外部形态的相关性进行了研究.结果显示:毛百合每个花药具4个花粉囊,小孢子母细胞减数分裂属连续型,小孢子在四分体中的排列属左右对称型,也有少数四面体型.成熟花粉粒属2-细胞型,并有1个萌发沟.花粉囊壁由4层细胞构成,即表皮、药室内壁、中层、绒毡层.绒毡层细胞为腺质,出现多核现象.研究发现花蕾大小与小孢子各发育时期密切相关.

Anatomic Study on Microsporogenesis and Male Gametophyte Development of Lilium dauricum

The correlations between microsporogenesis,male gametophyte developments and the morphologies of flower buds at different developmental stages for Lilium dauricum were studied.The results showed that in L.dauricum,each anther had four pollen sac,the microspore mother cells belonged to the successive type of meiosis,and microspore tetrads were isobilateral with some tetrahedral were also observed.The mature pollens belonged to the two-cell type with single germination aperture.The pollen sac wall was compose...