...,形成内外两层细胞层,在外面的一层,称为周缘细胞(p撕etal Cell),与表皮相贴近;里面的一层称造孢细胞(sporogenouS cell),造孢细胞经过有丝分裂,形成大量小孢子母细胞(miCrosporocyte),今后将通过减数分裂和配子体发育形成花粉(polleIl伊ain)。
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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).
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