Abstract: To explore the differences in drought resistance of Quercus fabri seedlings from different provenances and thus provide a basis for Q. fabri cultivation and the breeding of drought-tolerant varieties, PEG-6000 solution was used to simulate drought stress. The effects of different degrees of drought stress on the physiological and biochemical indices of Q. fabri were measured. Drought resistance of Q. fabrifrom eight provenances was comprehensively evaluated through principal component analysis and membership function method. The results showed that, with increasing drought stress, the relative water content and water potential of Q. fabrileaves from different provenances all exhibited a downward trend. MDA content showed a significant increase trend. The activities of SOD, POD and CAT all showed a trend of first increasing and then decreasing. The contents of soluble sugar, protein, and free proline all showed a trend of first increasing and then decreasing, while the content of betaine showed an increasing trend. Theresults of principal component analysis and membership function with 10 drought resistance indices being considered showed that the drought resistance of eight provenances ofQ. fabri was ranked as follows: Fujian Wuyishan>Guizhou Huangping>Jiangxi Yichun>Guangxi Quanzhou>Hubei Lichuan>Hubei Huangshi>Guangxi Liuzhou>Zhejiang West Lake.

Key words: drought stress, Quercus fabri, physiological biochemistry, resistance assessment, membership function.