关键词: 紫斑牡丹, 切花, 品种, 评价, 灰色关联度分析法

Abstract: In order to screen out the cultivars suitable for cut-flower production，we investigated 14 traits in 51 cultivars of flare tree peony（Paeonia rockii）and built an“Ideal Cultivar”to comprehensively evaluate them by using grey relational grade analysis method. Through systematic cluster analysis of weighted relational grade，the 51 cultivars were divided into four groups. The first group included 4 cultivars，‘Jingyuhong’，‘Fenmian Taosai’，‘Jingfenlan’and‘Jingguan Huihong’，with weighted relational grade of 0.7841–0.8203，which were the most suitable to be used for cut-flower and popularized preferentially. The second group included 14 cultivars with weighted relational grade of 0.7082–0.7561 which were greatly potential for cut-flower production，and they were recommended to be more suitable for cut-flower application. The third group including 19 cultivars with weighted relational grade of 0.6361–0.6950 had general potential for cut-flower and could be recommended as reserve resources for cut-flower. The fourth group included 14 cultivars with weighted relational grade of 0.5771–0.6291 and they were not suitable to be used for cut-flower production.

Key words: Paeonia rockii, cut-flower, cultivar, evaluation, grey relational grade analysis