| 摘要: |
| 实验结果表明在被子植物小孢子发生过程中有明显的细胞质分化。这主要包括小孢子母细胞减数分裂过程中细胞质中核糖体数量迅速减少和恢复,以及质体和线粒体形态结构的脱分化和再分化的周期性变化。这些变化认为是消除孢子体时期一些细胞质因子,转向配子体发育的过程,而与减数分裂无关。 |
| 关键词: 小孢子发生 细胞质分化 核糖体 质体 线粒体 被子植物 |
| DOI： |
| 投稿时间：1993-04-16 |
| 基金项目: |
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| The Cytoplasmic Differentiation during Microsporogenesis of Angiosperms |
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| Abstract: |
| Experimental results presented indicates observous cytoplasmic differentiation does exist during microsporogenesis of some angiosperms.These mainly involve the periodic change of ribosome den- sity,the dedifferentiation and redifferentiation of both plastid and mitochondrion during the process of meiosis.In review of evidences from organisms examined,it is considered unlikely that these changes are in any way a prerequisite of meiosis,but more a characteristic of cells undergoing major changes of the phase ... |
| Key words: microsporogenesis cytoplasmic differentiation ribosome plastid mitochondrion angiosperm |
