文献类型：期刊文献

中文题名：不同种源厚朴叶片性状变异及幼苗生长量研究

英文题名：Variation of Leaf Characters and Seedling Growth of Magnolia officinalis With Different Provenances

作者：舒枭[1,2] 杨志玲[1] 杨旭[1] 段红平[2] 甘光标[1,2] 于华会[1]

第一作者：舒枭

机构：[1]中国林业科学研究院亚热带林业研究所;[2]云南农业大学资源与环境学院

年份：2009

卷号：25

期号：4

起止页码：19-25

中文期刊名：生态与农村环境学报

外文期刊名：Journal of Ecology and Rural Environment

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；CSSCI:【CSSCI2008_2009】；

基金：国家科技部公益性林业专项(200704022)

语种：中文

中文关键词：厚朴;种源;叶片性状;生长量

外文关键词：Magnolia offieinali; provenanee; leaf charaeteristics; growth

分类号：X176;Q15

摘要：以全国8省份19个种源的厚朴(Magnolia officinalis)幼苗为研究对象,测定了叶片性状及生长量。结果表明,不同种源间叶片特征值及叶面积、比叶重和叶绿素含量均存在极显著差异,且与几个基本的环境因子间相关性达到显著水平。不同种源间苗高与地径均存在极显著差异,且厚朴种源苗高从南到北变异逐渐降低,地径则从东到西逐渐减小,即苗期地理变异表现为经纬双向变异,但主要还是以南-北变异为主。叶片性状间及与苗高、地径间的相关性分析结果显示,叶形指数与叶片宽在α=0.01水平上呈显著负相关,叶面积与叶柄长、叶片长及叶片宽在α=0.01水平上呈显著正相关,苗高和地径分别与叶面积和比叶重在α=0.05水平上呈显著正相关。聚类分析结果显示,部分地区厚朴种源呈现典型的区域板块化特征,部分地区则呈现随机变异的特征。
Leaf characteristies and seedlings growth of Magnolia officinalis from 8 provinces in China were studied. Resuits show that significant differences existed between plants of different provenances in leaf characteristic, leaf area, specific leaf weight （ SLW） and chlorophyll content, and were closely related to some basic environmental factors. Differences between the plants were also significant in seedling height and ground diameter. Seedling height decreased gradually from south to north geographically, while ground diameter declines from east to west. That means the geographic variation of the plant at the seedling stage manifests a two-way variation with the latitude and longitude, but the variation is more significant with the former, Correlation analysis of leaf characteristics with seedling height and ground diameter reveals an extremely significant negative correlation between leaf shape index and leaf width, and an extremely signifieant positive eorrelation between leaf area and petiole length, and between leaf length and width. Cluster analysis shows that in some areas, the provenances of M. officinalis are characterized typically by regionalization, and in some, by randomness.