八角莲属植物根的比较解剖学研究  

Comparative Anatomical Studies on Root of Dysosma

作　　者：张践[1] 张秀丽[1] 孙成仁[1] 徐益梅[1] 

机构地区：[1]西华师范大学生命科学学院,四川南充637002

出　　处：《西华师范大学学报（自然科学版）》2008年第4期417-420,共4页Journal of China West Normal University(Natural Sciences)

摘　　要：采用常规石蜡切片法对八角莲属七种植物根的解剖构造进行观察研究,其中西藏八角莲、广西八角莲和贵州八角莲是首次报道.结果表明:皮层薄壁细胞有草酸钙晶体、淀粉粒等后含物,内皮层明显,维管束类型为四原型、五原型或六原型,部分种类髓具木纤维结构,壁强烈增厚,木质化.通过对比观察,我们认为八角莲属植物根的解剖结构比较稳定,可以作为该属的分类特征.The anatomical structure of seven species of Dysosma has been researched in this paper, and D. tsayuensis,D, guangxiensis and D. maiorensis are frist reported. In the result,we have found the parenchyma of cortex has crystal,starch grain,etc, the endodermis has evidenced,and the vascular type is tetarch,pentarch and hexarch. D. difformis,D, veitchii,D, versipellis and D. guangxiensis have corkification in the pith. The anatomical characters of roots could be used to circumcribe the species within Dysosma as they are stable among different species.

关 键 词：八角莲属 根 比较解剖 

分 类 号：Q944.54[生物学—植物学]