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Abstract Though the ground cover Chrysanthemum was rich in color and adaptability, and had great potential for application, it was rare to study the classification of its cultivars. Thirty two types of cultivars of ground cover Chrysanthemum were selected to classify with 14 parameters of leaf's shape via cluster analysis. The results showed that the 32 types ground cover Chrysanthemums were divided into 2 major groups and 10 small groups based on the Q cluster analysis. R cluster and principal component analysis were used to make further analysis and the results showed that the four parameters contribution rate were74. 49%, including the apex angle, the terminal opening, the lower lobes opening, and the leaf aspect ratio. These parameters could be used as important indexes for leaf classification. The results of shape of leaves' SEM scanning showed that the classification methods via the shape of leaf could be used as a classification standard for different varieties of ground cover Chrysanthemum.
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2018, Vol. 31 
