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  • Author or Editor: Zhiping Che x
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Yuee Tian, Zhiping Che, Di Sun, Yuanyuan Yang, Xiaomin Lin, Shengming Liu, Xiaoyu Liu and Jie Gao

Tree peonies are valuable ornamental plants and are widely cultivated in China and many other countries. Gray mold caused by Botrytis cinerea is an increasingly severe disease in Luoyang of China and seriously affects the ornamental value of tree peonies both in the open air and in greenhouses. However, the resistance of different tree peony cultivars to B. cinerea remains unknown. In this study, 15 tree peony cultivars belonging to three different flowering times were evaluated for resistance to B. cinerea by detached leaf assay measure. Results showed that the resistance of early-flowering peonies was stronger than that of later flowering peonies. Moreover, the correlation between flowering time and resistance of tree peonies was extremely significant (P < 0.01). The information obtained in this study can provide theoretical basis both for further exploring the resistance genes of tree peony to B. cinerea and for the prevention and controlling of the gray mold.