钩叶藤属和省藤属导管分子的比较研究  

COMPARATIVE STUDIES ON VESSEL ELEMENTS IN PLECTOCOMIA AND CALAMUS

作　　者：蔡则谟[1] 

机构地区：[1]中国林业科学研究院热带林业研究所

出　　处：《广西植物》1995年第1期39-42,共4页Guihaia

基　　金：加拿大国际开发研究中心资助

摘　　要：本文描述３种钩叶藤属（Ｐｌｅｃｔｏｃｏｍｉａ）植物茎的后生木质部导管分子，并与省藤属（Ｃａｌａｍｕｓ）比较分析。钩叶藤属的导管分子大部分具单穿孔板．类似省藤属，但具复穿孔板导管分子的比量和横隔数目以及导管分子长度均比省藤属大．讨论了导管分子特化同两属天然分布植被区的关系。This paper describes the metaxylem vessel elements of stem in 3 species of Plectocomia and makes a comparative analysis with those in Calamus. Most vessel elements in Plectocomia have simple perforation plates like in Calamus, but the proportion and the number of bars of vessel elements with multiple perforation plates and the length of vessel elements in Plectccomio are larger than those in Colamus on the average. In addition, a relationship between the specialization of vessel elements and the vegetation regions of natural distribution of these two genera is discussed.

关 键 词：导管分子 钩叶藤属 省藤属 

分 类 号：Q949.715[生物学—植物学]