摘要
为了从数量上分析蛇足石杉(Huperzia serrata)天然居群表型性状在居群间和居群内的变异,对分布在武陵地区的15个蛇足石杉天然居群的9个表型性状进行了测量和比较分析.结果表明:顶叶长、顶叶宽、顶叶长宽比、茎基径、基叶长、基叶长宽比、株高、节间长在居群间表现显著差异;聚类分析和主成分分析显示,15个居群可分为3类,顶叶长、顶叶长宽比、茎基径、株高、节间长这5个性状是反映表型差异的主要因素.
In order to investigate patterns of phenotypic trait variation in natural populations of Huperzia serrata,nine morphological traits in fifteen Huperzia serrata populations in Wuling were measured.The results showed that inter / intro population variation occurred remarkably in most morphological characters such as length of upper leaf,width of upper leaf,length-width ratio of upper leaf,diameter of stem,length of bottom leaf,length-width ratio of bottom leaf,plant height and internode length.Based on the morphological characters,cluster analysis showed that 15 populations of Huperzia serrata had been divided into 3 parts.Principal component analysis showed that five characters including length of upper leaf,length-width ratio of upper leaf,diameter of stem,plant height and internode length were main factors which accounted for morphological variation of Huperzia serrata.
出处
《生命科学研究》
CAS
CSCD
2010年第4期288-293,共6页
Life Science Research
基金
湖南省科学技术厅科技计划项目(2007NK3075)
广东省科技计划资助项目(2007B020704003)
关键词
蛇足石杉
形态变异
天然居群
Huperzia serrata
morphological variation
population
作者简介
杨伟波（1982-），男，土家族，湖南慈利人，硕士，主要从事农业生态学和植物生态学研究；
通讯作者：李菁（1955-），男，湖南石门人，吉首大学教授，硕士生导师，主器从事植物生态学和保护生态学研究，Tel：0743—8563852，E-mail：lkg@jsu．edu．cn．
