不同起源与方位下桂花的构型差异  

Architectural variation of Osmanthus fragrans in different origins and orientations

作　　者：林勇明[1,2] 洪滔[1,2] 吴承祯[1,2] 洪伟[1,2] 胡喜生[1,2] 范海兰[1,2] 宋萍[1,2] 

机构地区：[1]福建农林大学林学院,福建福州350002 [2]福建省高校森林生态系统过程与重点实验室,福建福州350002

出　　处：《福建林学院学报》2009年第2期135-138,共4页Journal of Fujian College of Forestry

基　　金：福建省教育厅科学基金资助项目(K02047);中国博士后科学基金资助项目;福建省科技厅重大资助项目(2001F007)

摘　　要：通过对天然和人工种植桂花的构型进行比较统计分析,结果表明:不同起源、不同环境下的桂花具有较大差异。人工种植桂花不仅在总体分枝率、逐步分枝率(SBR1∶2、SBR2∶3)、一级枝长度、枝径比2∶1、枝倾角、叶片长度宽度、叶片面积等与天然次生桂花个体上存在显著差异,而且在东、西、南、北4个方位的绝大部分也显著差异于天然次生桂花,即人工种植桂花与天然次生桂花之间的构型差异在个体水平和局部水平存在着相同的趋势。Comparative analyses were made on the architectures of Osmanthus fragrans Originated naturally and plantations. The results indicated that there was a great architectural variation between the individuals of two origins. It was shown concretely as follows： Overall bifurcation ratio, stepwise bifurcation （SBR1：2 ）, stepwise bifurcation （SBR2： 3 ）, the first-order branch length, ratio of branch diameter （RBD1：2）, branch angle to＇horizon, leaf length, and width and leaf area, etc. of O.fiagrans vary significantly between originated naturally and plantation which showed not only in individual but also in four aspects. It suggests that it is synergetic for individual and its part to modify plastically in response to different origins and orientations.

关 键 词：不同起源 方位 桂花 构型差异 

分 类 号：Q948.12[生物学—植物学] Q949.776.2