Comparative Analysis of Morphologic Traits of 50 Large-flowered Chrysanthemum Varieties

50个大菊品种形态学性状比较分析（英文）

With 50 large-flowered Chrysanthemum varieties from germplasm nursery of Wunaoshan Forest Farm in Macheng City as research objects, 64 morphological traits were investigated by field experiments adopting randomized block design. The morphological differences were observed by uniformity analysis, variability analysis, principal component analysis and cluster analysis. The result showed that the vari- able coefficients of 59 traits were greater than 15%; the contribution rate of first seven principal components reached 81.45%; and it was found by clustering analy- sis that the 50 germplasm resources could be divided into four clusters with obvious morphological differences, and plant type could be used as an index for classifica- tion.

以麻城市五脑山林场菊花种质资源圃中50种大菊品种为研究对象,采用田间随机区组实验设计,对64个形态性状进行了测定,并进行了一致性及变异性分析、主成分分析和聚类分析,结果表明:在所有性状中有59个性状变异系数大于15%;前7个主成分对变异的贡献率达81.45%,其中特征量较大的花部性状对大菊品种分类具有较大的影响;通过聚类分析可将50份大菊种质资源分为4类,形态差异明显;株型可作为大菊分类的一个重要指标。