木通科4属植物导管穿孔板的比较研究  

Comparative Investigation of Vessel Perforation Plates of Four Genera in Lardizabalaceae

作　　者：张小卉[1] 

机构地区：[1]药用植物资源与天然药物化学教育部重点实验室,陕西师范大学生命科学学院,西安710062

出　　处：《植物研究》2011年第3期277-283,共7页Bulletin of Botanical Research

基　　金：药用植物资源与天然药物化学教育部重点实验室开放基金

摘　　要：运用扫描电子显微镜法(SEM)对木通科(Lardizabalaceae)4属植物茎的次生木质部导管分子进行观察,结果表明:(1)端壁均具有单穿孔板;(2)串果藤属的导管分子具有丰富的穿孔板类型,包括网状、梯状、单穿孔及过渡类型,穿孔具有网状、丝状、片状的纹孔膜残余;大血藤属和八月瓜属的导管分子具有相似的特征,端壁具有梯状、单穿孔及梯—单混合穿孔板;野木瓜属只具有单穿孔板;(3)侧壁上具有穿孔板,多为梯状或梯—网混合类型(除了野木瓜属);(4)野木瓜属的导管侧壁具有独特的螺旋状加厚。各属导管的不同特征为木通科的系统演化提供比较可靠的依据。The vessel elements and their perforation plates in the secondary xylem of stem of the four genera in Lardizabalaceae were observed under scanning electron microscope（SEM）.The results showed that,（1）simple perforations were found on the end wall of the vessel element in four species;（2）Sinofranchetia was distinguished from the others by perforation types on the end wall： reticulate,scalariform,simple,reticulate-scalariform,reticulate-simple,scalariform-simple and reticulate-scalariform-simple perforations;the membrane remnants in perforations were various from web,flake and thread;Sargentodoxa and Holboellia shared some characteristics of scalariform,scalariform-simple and simple perforations plates on the end wall of the vessel element;only simple perforations plate was found in Stauntonia;（3）scalariform and reticulate-scalariform perforations appeared on the lateral wall（except Stauntonia）;（4）spirally thicken presented on the lateral wall of the vessel element in Stauntonia.The new characteristics of vessel element of genera can provide important basis for phylogeny analysis in Lardizabalaceae.

关 键 词：串果藤 大血藤 大花牛姆瓜 野木瓜 木通科 导管 穿孔板 

分 类 号：Q944.66[生物学—植物学]