科尔沁沙地22种菊科草本植物叶片形态特征研究

摘要/Abstract

摘要： 以内蒙古科尔沁沙地22种菊科草本植物为实验材料,研究这些植物的比叶面积、叶片厚度、叶片干物质含量、叶片体积、叶重比和叶片组织密度等特性之间的关系。结果表明,叶片体积和叶片厚度之间存在较强的正相关,其相关系数r=0.782。而叶片厚度与叶片组织密度、比叶面积与叶片组织密度、叶片体积与叶片组织密度之间则存在一定的负相关性,它们的相关系数分别为-0.767、-0.559和-0.505,其余各特性之间均不存在相关性。根据赋值后数据或者二元数据,运用聚类分析方法得出3个组群,并运用单因素方差分析方法检验各特性在各组间的显著性,叶片厚度、叶片体积、叶重比和叶片组织密度特性在组间存在极显著差异。

Abstract: The study on the leaf traits of 22 compositae herbaceous species in Horqin sandy land indicated that there was a positive correlation between leaf volume and leaf thickness(r=0.782),while the correlations between leaf thickness and leaf tissue density,specific leaf area and leaf tissue density,and leaf volume and leaf tissue density were negative,with r values being-0.767,-0.559 and-0.505,respectively.No significant correlations were observed among other leaf traits.Based on the categorical or binary data,these 22 species were divided into 3 groups by cluster analysis.One-way ANOVA analysis suggested that there was a markedly significant difference among the groups in their leaf thickness,volume,weight ratio,and tissue density.

中图分类号:

Q948

李晓兰, 李雪华, 蒋德明, 刘志民, 王红梅, 姬兰柱. 科尔沁沙地22种菊科草本植物叶片形态特征研究[J]. 生态学杂志, 2005, (12): 1397-1401.

LI Xiaolan, LI Xuehua, JIANG Deming, LIU Zhimin, WANG Hongmei, JI Lanzhu . Leaf morphological characters of 22 compositae herbaceous species in Horqin sandy land[J]. cje, 2005, (12): 1397-1401.

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