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桂花品种数量分类研究
引用本文:唐东芹.桂花品种数量分类研究[J].南京林业大学学报(自然科学版),1998,22(1):37-42.
作者姓名:唐东芹
作者单位:上海农学院
摘    要:选取15个主要分类性状对25个桂花品种进行了数量分类研究。主成分分析结果综合反映了各性状的信息,揭示了桂花品种分类的关键,为今后进行性状观察,记载及取舍等提供了定量依据。系统聚类分析结果表明了花色,花期等指标在桂花品种分类中居重要地位,同时,还对桂花品种间的亲缘关系作了探讨。

关 键 词:桂花  品种  数量分类  主成分分析  系统聚类

A STUDY ON NUMERICAL CLASSIFICATION OF THE CULTIVARS OF SWEET OSMANTHUS (OSMANTHUS FRAGRANS (THUNB.) LOUR.)
Tang Dongqin.A STUDY ON NUMERICAL CLASSIFICATION OF THE CULTIVARS OF SWEET OSMANTHUS (OSMANTHUS FRAGRANS (THUNB.) LOUR.)[J].Journal of Nanjing Forestry University(Natural Sciences ),1998,22(1):37-42.
Authors:Tang Dongqin
Institution:Shanghai Agricultural College Shanghai 201101
Abstract:The article sudied the numerical classification of cultivars of sweet osmanthus for the first time. 15 main characters had been selected to study 25 cultivars of sweet osmanthus. The results of PCA method represented the information of all selected characters comprehensively and revealed the key to the cultivar classifivation, thus providing quantitative foundation for observing, recording and accepting or rejecting the characters hereafter. The results of cluster analysis showed that some characters such as flower color and flower stage etc, played an important role in the classification. At the same time, the article also emphatically delved into the affinity among these cultivars.
Keywords:Cultivars of sweet osmanthus  Numerical classification  PCA method  Cluster analysis
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