浙江农林大学学报2017，Vol.34Issue(1)：112-119,8.DOI:10.11833/j.issn.2095-0756.2017.01.016
米老排不同种源的表型性状变异分析
Phenotypic trait variation for different provenances of Mytilaria laosensis
摘要
Abstract
To probe the variation in phenotypic traits among and within provenances of Mytilaria laosensis Lecomte,seven phenotypic traits (leaf length, leaf width, ratio of leaf length to leaf width, leaf shape, degree of trunk straightness, color, and shape of bark) of eightprovenances were tested,using nested analysis of variance, coefficient of variation (CV), multiple comparison, correlation analysis, and cluster analysis (UPGMA) to ana-lyze the results.Results showed significant differences in phenotypic traits among and within provenances (P=0.05). Variation was greater within provenance (18.08%) than among provenances (5.68%), withthe mean phenotypic differentiation coefficient among provenances being 35.1%. For the seven phenotypic traits, the CV of bark color was largest (21.16%) and the ratio of leaf length to leaf width was smallest (11.26%); among different provenances, the average CV for all traits revealed that Guangxi Debao Provenance was the largest (18.41%) and Guangxi Longzhou Provenance was smallest (16.10%). The bark color of M. laosensis with in-creasing latitudesvariedfrom deep to shallow, and leaves had greater leaf area with increasing latitudes. The eight provenances could be divided into three source distribution areas including Guangdong Fengkai Prove-nance in the eastern part, Guangxi Fangcheng and Guangxi Shangsi Provenances in the central area, and Guangxi Debao, Guangxi Jingxi, Guangxi Longzhou, and Guangxi Pingxiang Provenances in the western section. This suggested that the main source of phenotypic variation in M. laosensis was from pedigrees within prove-nances, and the main variation was caused by the change in latitude.关键词
林木育种学/米老排/种源/表型性状/变异系数/相关性分析Key words
forest tree breeding/Mytilaria laosensis/provenance/phenotypic trait/coefficient of variation/cor-relation analysis分类
农业科技引用本文复制引用
覃敏,尹光天,杨锦昌,李荣生,邹文涛..米老排不同种源的表型性状变异分析[J].浙江农林大学学报,2017,34(1):112-119,8.基金项目
国家林业公益性行业科研专项（201204304）；广东省林业科技创新专项 （）
