【摘要】 在刺人参的离析材料中,见到了多种类型穿孔板的导管,这在同一种植物中是少见的,在它的个体发育过程中重演了系统发育过程中导管分子穿孔板的进化过程,是观察导管分子穿孔板类型及演化的典型实验材料。更多还原

【Abstract】 We see many types of the vassel’s perforation plate in the educing materials of oplopanaxelatus and ontogenesis process, it recapitulates the evolution process of vassel element’sperforation plate in phylogeny. And it is the typical experimental material in observing the typeand evolution of vassel element’s perforation plate.更多还原