一.绪论植物体中细胞间普遍地存在着原生质的连络已经是植物学界公认的事实。按照一般的观念,认为这种原生质的连续性与维持个体的完整、刺激的传递以及物质的运输密切有关。然而尽管如此说,实际上每接触到这类物质运输问题时,却又对胞间连丝在其中所能尽的具体职责发出疑问来。我们仅举出两位对胞间连丝研究有素的欧洲学者的 I. INTRODUCTION The prevalence of protoplast liaisons among cells in plants has been recognized by botanists. According to the general idea, the continuity of this protoplasm is considered to be closely related to the maintenance of individual integrity, stimulus delivery and material transport. In spite of this, virtually every question of the transport of such substances comes into question when it comes to the specific responsibilities of the cell. We cite only two European scholars well-versed in the cell