植物学报 ›› 2003, Vol. 20 ›› Issue (05): 585-588.

• 研究论文 • 上一篇    下一篇

非洲狼尾草珠心细胞核穿壁运动超微结构研究

刘林 李淑兰   

  1. (临沂师范学院植物发育与无融合生殖研究室 临沂 276005)
  • 收稿日期:2002-11-12 修回日期:2003-03-13 出版日期:2003-10-20 发布日期:2003-10-20
  • 通讯作者: 刘林

Ultrastructural Study of Nucleus Transfer in Nucellus of Pennisetum squamulatum

LIU Lin LI Shu-Lan   

  1. (Laboratory of Plant Development and Apomixis, Linyi Teachers University, Linyi 276005)
  • Received:2002-11-12 Revised:2003-03-13 Online:2003-10-20 Published:2003-10-20
  • Contact: LIU Lin

摘要: 用透射电子显微镜观察了非洲狼尾草珠心组织中细胞核穿壁运动。一个细胞核向相邻细胞转移时,可以进入一个或多个孔道:孔道直径0.33~0.68 μm。处于穿壁状态的细胞核染色质不正常地浓缩,电子密度大。

Abstract: Transmission electron microscopy was used to characterize the nucleus transfer across cell wall in nucellus of Pennisetum squamulatum.It was observed that a nucleus can move across cell wall through one or more than one channel with 0.33 to 0.68 μm in diameter,about 10 times of the plasmodesma width.The transferring nucleus is characteristic of condensed chromatin.