Ultrastructural studies on megasporogenesis in triticum aestivum l . ultrastructural studies on megasporogenesis in 小麦大孢子发生过程中的超微结构研究
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The megasporogenesis and microsporogenesis of phytolacca acinosa roxb . and formation of its male and female gametophytes 商陆大小孢子的发生和雌雄配子体的形成
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Observation by paraffin section showed that lipeng no . 2 embryo sac mother cells were almost entirely degenerated during megasporogenesis 切片观察发现，丽? 2号胚囊母细胞在四核期已完全退化。
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L were studied . during the meiotic process of megasporocyte , the ribosome population diminished greatly in prophase i and restored in metaphase i ; plastids and mitochondria turned unclear dedifferentiation in prophase i and recovered their normal structures redifferentiation in metaphase i . all these proved that cytoplasmic reorganization took place during the megasporogenesis of 发现了小麦大孢子母细胞减数分裂过程中，核糖体密度在前期显著降低，到中期才完全恢复质体和线粒体也出现了脱分化和再分化。从而证明了小麦的大孢子形成过程中也存在着细胞质改组现象。
