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.
大孢子的发育及胚囊的形成：造孢时期，造孢细胞发育成大孢子母细胞。
Development of megaspore and formation of embryo sac: the ovule has a layer of parietal cells at the sporogenous stage.
花分化过程中，外源乙烯诱导小孢子败育起始于造孢细胞至小孢子母细胞时期。
In the process of litchi flower differentiation, the microspore abortion induced by external ethylene starts from the transition period (from sporogenous cells to microsporocytes).
小孢子发育的超微结构观察发现，晋A不育系在造孢细胞增殖时期即表现出败育迹象。
Through ultra-structure observation, it is found that the microspore of Jin A began to abort at the stage of sporogenous cell division.
结果表明，1晋a不育系雄性败育的主要时期是在造孢细胞增殖——小孢子母细胞形成时期。
The results showed that: (1) the auxocyte abortion of Jin a took place at the stage of sporogenous cell division.
结果表明，1晋a不育系雄性败育的主要时期是在造孢细胞增殖——小孢子母细胞形成时期。
The results showed that: (1) the auxocyte abortion of Jin a took place at the stage of sporogenous cell division.
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