摘要
已有的资料表明,小麦胚乳的细胞化是通过胚囊壁的内突生长与延伸来进行的;并存在于多种被子植物中。然而有关细胞化时成壁物质的来源以及高尔基体或内质网的分泌活动是否参与的问题,意见尚不一致。
Triticum aestivum cv.“Yang Mai # 1”was used to study the cell wall formation in free-nuclear endosperm with electronmicroscopy and fluorescence microscopy.During the in- itiation of cellularization the peg-like wall ingrowths developed,and the freely growing walls gradually cleaved the cytoplasm into small compartments in both regions (ventral and dor- sal) of the endosperm sac,but in ventral region the anastomose of freely growing wall often, occured.The striking resemblance and close connection betwteen nucellar debris and freely growing wails showed the possibility that the disintegrated nucellus played an important role in supporting the wall formation of endosperm during the early stages of cellularization.
基金
中国科学院科学基金资助课题
关键词
小麦
胚乳
细胞化
胞壁形成
珠心
Triticum aestivum
Cellularization
Endosperm
Freely growing wall
Nucellus
