1. A dedifferentiation of mitochondria and plastids in structure in microspore mother cells was observed at from diplonema/diakinesis to metaphase Ⅰ,then a redifferentiation at dyad stage.
   在小孢子母细胞减数分裂过程中，有核糖体数量存在逐渐减少的现象，质体和线粒体结构在双线期/终 变期和中期Ⅰ趋于简化；

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