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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microspore mother cell abortion 小孢子母细胞败育
The nucleus in shrinking cytoplasm of microspore mother cell enters into telophase. 17.
另一些花粉母细胞在末期具有微核。
In sterile anthers, abnormal distribution of calcium gran - ules first appeared in callus wall of microspore mother cell (Plate IV-1).
在不育花药中,最早出现的钙颗粒异常分布是在小孢子母细胞的胼胝质壁中积累了较多的钙颗粒。
When microspore mother cell preparing meiosis, abundant calcium precipitates appeared in cytoplasm of tapetal cells and microspore mother cells, and in callus wall surrounding the cells.
当花粉母细胞进行减数分裂时,花药绒毡层细胞和花粉母细胞中出现了许多的细小钙颗粒。
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