21个白榆无性系差异性分析与评价

J4 ›› 2011, Vol. 46 ›› Issue (11): 8-11.

21个白榆无性系差异性分析与评价

慕德宇¹, 王强², 吉文丽^1*

1.西北农林科技大学林学院, 陕西杨凌 712100; 2. 山东省林业科学研究院, 山东济南 250014

收稿日期:2011-03-25 出版日期:2011-11-20 发布日期:2011-11-30
通讯作者: 吉文丽(1965- )，女，副教授，硕士生导师，研究方向为学园林植物与观赏园艺. Email: jiwenlil@yahoo.com.cn
作者简介:慕德宇(1987- )，男，硕士研究生，研究方向为学园林植物与观赏园艺. Email: mudeyu@yeah.net
基金资助:
世界银行贷款技援项目（SEAP-PY-3）

Analysis and evaluation of 21 kinds of elm variations population diversity

MU De-yu¹, WANG Qiang², JI Wen-li^1*

1. College of Forestry, Northwest A ＆ F University, Yangling 712100, Shaanxi, China;
2. Shandong Academy of Forestry Science, Jinan 250014, Shandong, China

Received:2011-03-25 Online:2011-11-20 Published:2011-11-30

摘要/Abstract

摘要：

在对21个2年生白榆无性系生长量指标测定的基础上,采用方差分析、生长量对比分析、主成分分析法进行数据处理,并对各无性系生长量进行了比较。研究结果证明无性系间各生长指标均存在显著差异,证明其各自不同的生理生态特性;主成分分析得到的前两个主成分共可解释8924％的数据变异,较好地代表了胸径、树高、冠高值及冠幅等变量,基于此将21个白榆无性系分为4大类,并对分类依据与应用状况进行系统分析探讨。本研究确定了各无性系的生长特性,并为不同幼树生长量评价体系提供了新的方法。

关键词: 白榆无性系;差异;分析与评价

Abstract:

Based on the investigation of 21 kinds of two-year-old elm variations, analysis of variance (ANOVA), contrastive analysis and principal component analysis (PCA) methods were applied to investigate their growth characteristics. The results demonstrated significant differences among elm’s diameter at breast height (DBH), height, crown height and crown diameter. The first two principal components explained 89.24％ of the variance and properly described the characters of the total data. Based on the PCA results, we divided the 21 kinds of elm variations into 4 groups and discussed their application potentialities. This work determined the different elm variations’ characteristics and gave an example to assess plant growth.

Key words: Ulmus pumila clones; difference; analysis and evaluation

慕德宇1, 王强2, 吉文丽1*. 21个白榆无性系差异性分析与评价[J]. J4, 2011, 46(11): 8-11.

MU De-yu1, WANG Qiang2, JI Wen-li1*. Analysis and evaluation of 21 kinds of elm variations population diversity[J]. J4, 2011, 46(11): 8-11.

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