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银合欢种质形态性状分析

发表时间:2010-09-30  浏览量:1263  下载量:468
全部作者: 虞道耿,刘国道,白昌军
作者单位: 中国热带农业科学院热带作物品种资源研究所,农业部热带作物种质资源利用重点开放实验室
摘 要: 采用相关性分析、主成分分析以及聚类分析的数量统计方法,对中国热带农业科学院热带牧草中心引进有代表性的45份银合欢材料的9个形态性状进行了分析。结果表明:银合欢种质表现了丰富的形态多样性,变异系数在11.10%~31.23%之间,平均变异系数达16.67%,外部性状间部分存在着显著或极显著的相关性,相关系数最大达到0.778;通过主成分分析,可分为6个主成分,分别为粒大因子、叶片因子、羽片对数因子、叶轴长因子、荚长因子和粒重因子;通过聚类分析,银合欢分为夏威夷型、萨尔瓦多型及秘鲁型(中间型)。
关 键 词: 农艺学;银合欢;形态性状;聚类分析;主成分分析
Title: Morphological characteristics analysis for Leucaena leucocephala
Author: YU Daogeng, LIU Guodao, BAI Changjun
Organization: Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences; Key Laboratory of Tropical Crops Germplasm Resources Utilization, Ministry of Agriculture
Abstract: The relative analysis method and principal components analysis (PCA) as well as hierarchical cluster analysis (HCA) are all adopted to analyze the 9 main quantitative characteristics of 45 Leucaena leucocephala (Lamarck) de Wit introduced by Tropical Pasture Centre of Chinese Academy of Tropical Agricultural Sciences. The preliminary results reveal that: L. leucocephala shows strong morphological diversity and its variant coefficient is between 11.10% and 31.23%, the average of variant coefficient is 16.67%. There are remarkable correlations among some of morphological characters of L. leucocephala. The maximal correlation coefficient reaches to 0.778; 6 principal components of L. leucocephala including grain size, leaves, pairs of leaves, leaf axis length, pod length and grain weight are divided with PCA. Three morphological types based on the nine characteristics are divided with HCA, that are L. leucocephala Hawaii, L. leucocephala Salvador and intermediate type.
Key words: agronomy; Leucaena leucocephala; morphological characteristics; cluster analysis; principal component analysis
发表期数: 2010年9月第18期
引用格式: 虞道耿,刘国道,白昌军. 银合欢种质形态性状分析[J]. 中国科技论文在线精品论文,2010,3(18):1862-1868.
 
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