花药含有4个花粉囊，其中有很多小孢子母细胞（microspore mother cell）。每个小孢子母细胞经 减数分裂产生一个单倍体的生殖核和一个单倍体的管核，然后产生一个硬壳而成为花粉粒。
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Cytokinesis of microsporocyte meioticdivision is of simultaneous type. Tetraspor- ophyte is tetrahedral.
小孢子母细胞减数分裂为同时型,四分体排列方式为四面体型。
参考来源 - 马齿苋的生长发育和高产培育的肥力运筹The meiosis stages of pollen mother cells(PMCs) were observed,which was correlative with the diversification of male flower.
掌握了小孢子母细胞减数分裂进程及其与花芽形态变化规律。
参考来源 - 银杏小孢子发育进程及其染色体加倍方法研究The primary sporogenous cells develop into microsporocyte by mitosis. The microsporocyte undergoes simultaneous meiotic division and produces tetrad.
造孢细胞经过数次有丝分裂形成小孢子母细胞,后者经减数分裂形成四分体,其胞质分裂方式为同时型。
参考来源 - 喜树生殖生物学的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
相邻小孢子母细胞之间有胞质通道。
There are some cytoplasmicchannels present between adjacent microsporocytes.
绒毡层细胞仲入小孢子母细胞之间形成“小梁”。
The tapetal cells invest in the sporogenous tissue and form "the Balken".
马铃薯花药中的造孢细胞产生3 ~ 4层时，进而变成小孢子母细胞。
When sporogenous cells in potato anther produced 3-4 layers they became microsporocytes.
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