油松成熟树脂道超微结构研究

The Ultrastructure of the Mature Resin Canals of pinus tabulaeformis Carr.

油松树脂道上皮细胞具有大量质体,质体外被内质网鞘,内质网鞘与核膜和胞质内质网相连接。各个细胞器中均有嗜锇物质。同时,在其质膜边缘,质膜与细胞壁之间,疏松细胞壁以及腔道中,也有嗜锇物质。另外,上皮细胞壁上具有纤丝排列疏松形成的通道,上皮细胞壁之间具有大量胞间连丝。

Epithelial cells contain numerous plastids closely sheathed with endop-lasm reticulum in pintis tabuldeformis resin ducts, and sheathed ER conne cted with free ER and nuclear envelop. Usually osmiophilic vesicles appear atthe plasmolemma border, in between plasmolemma and cell walls, and in walls and canals. In addition, passages in epithelial cells and numerous plasmodesmata between epithelial cells are also found.