林业科学2009，Vol.45Issue(10)：74-80,7.
白桦核心种质初步构建
Preliminary Construction of Core Collection of Betula platyphylla Germplasm
摘要
Abstract
Based on four quantitative traits, height, diameter, volume and cellulose content of 240 families of Betula platyphylla, primary core collections were constructed using different sampling proportion(5% ,10% and 15%) , two distances (Mahalanobis distance and Euclidean distance) calculi, eight hierarchical cluster methods (Single linkage, Complete linkage, Median method, Centroid method, Unweighted pair-group method using arithmetic averages, Weighted pair-group average, flexible method and Ward' s method) and three sampling strategies ( random sampling, preferred sampling and deviation sampling). The genetic variation of the quantitative traits among these primary core collections was compared by evaluating the mean difference percentage (MD), variance difference percentage (VD), coincidence rate of range (CR) and changeable rate of coefficient of variation (VR) of the traits. The results showed that the primary core collection was constructed with 10% sampling percent, Mahalanobis distance, preferred sampling strategy, and single linkage clustering method, and it was composed of 24 families of Betula platyphylla and the best representative of total germplasm.关键词
白桦/种质资源/核心种质Key words
Betula platyphylla/germplasm/core collection分类
农业科技引用本文复制引用
魏志刚,高玉池,刘桂丰,刘关君,杨传平..白桦核心种质初步构建[J].林业科学,2009,45(10):74-80,7.基金项目
科技基础性工作专项课题(2007FY110400-3),黑龙江省重点攻关课题(GA068301-4)及国家自然科学基金项目(30571513). （2007FY110400-3）
