摘要
含笑的花药具4个小孢子囊,花药壁由表皮、药室内壁、3～6层中层和绒毡层组成。绒毡层细胞在发育后期由单核分裂为2核,原位解体,为腺质型;小孢子母细胞在减数分裂过程中胞质分裂为同时型,小孢子四分体为四面体型,也有左右对称型的;成熟花粉为3细胞型。在前人对含笑小孢子发生和雄配子体发育的观察描述基础上,丰富了含笑的胚胎学资料,并对其系统学意义进行了探讨。
For Michelia figo, there are four microsparangia in the anther whose wall is composed of epidermis, endothecium,3-6 middle layers and a tapetum. The antheral tapetum,consisting of monocyte or binucleated cells,degenerated in situ, thus belonging to glandular type. The simultaneous cytokinesis in microspore mother cells leads to tetrahedral as well as isobilateral（bilaterally symmetrical）tetrads. The mature pollen grains are 3 celled. In the present study embryological features of M. figo were depicted further based on the former relative reports and their systemat- ic significance was discussed.
出处
《广西植物》
CAS
CSCD
北大核心
2007年第6期836-839,共4页
Guihaia
基金
温州师范学院引进人才启动基金
浙江省高校青年教师资助计划项目~~
关键词
含笑
小孢子发生
雄配子体
花药壁
系统学
Michelia figo
microsporogenesis
male gametophyte
anther wall
systematics
