尾巨桉木材物理力学性质的主成分分析  

The Principal Component Analysis on the Physic-mechanical Properties of E. urophylla × E. grandis

作　　者：苌姗姗[1] 胡进波[1] 刘元[1] 

机构地区：[1]中南林业科技大学

出　　处：《林业科技开发》2006年第2期39-41,共3页China Forestry Science and Technology

基　　金：国家自然科学基金"我国主要桉树人工林树种木材材性性状遗传分析"(项目批准号:30170754)。

摘　　要：以11个尾巨桉家系和无性系木材物理力学特性为研究对象,应用SPSS数理统计软件,通过主成分分析方法,将影响尾巨桉木材物理力学性质的10项指标分为强度指标和干缩指标两大主成分,而其中影响最大的是基本密度和差异干缩。同时对前两个主成分坐标值进行排序聚类,DH18和DH33、DH2和DH16、DH30—5和DH30-1分别具有相近的木材材性,将它们分别划分合并为一类,为以后尾巨桉选种育种及工业用材的定向培育提供参考。The wood physic-mechanical properties of 11 families and clones from E. urophylla × E. grandis were studied in this paper. With principal component analysis, ten factors of affecting the wood physico-meehanical properties were divided into two classes, the strength index and shrinkage index, of which the basic density and variance shrinkage were more important. 11 families and clones of E, urophylla × E. grandis were divided into three groups based on cluster analysis. It might be helpful to the further breeding and cultivation of E. urophylla × E. grandis.

关 键 词：尾巨桉 木材物理力学性质 主成分分析 

分 类 号：S791.246[农业科学—林木遗传育种]