Abstract: 【Objective】Based on the preliminary screening,resistance to drought for 5 Zoysia species under different habitats was evaluated.【Methods】Using PEG-6000 to simulate drought,resistance to drought of plants was judged based on the changes in indicators such as withered leaf rate,leaf water content,chlorophyll,malondialdehyde and proline.【Results】Withered leaf rate and proline content of 5 Zoysia species increased gradually with the increase of drought stress,while leaf water content and chlorophyll a/b decreased gradually. The physiological indicators of Zoysia species treated with 15% PEG-6000 were effected. According to the value of membership function,the order of drought resistance of 5 Zoysia species was M7>8H>M11>M14>M1.【Conclusion】The drought-resistant varieties could be selected from 5 Zoysia species under different habitats,and could be further applied to the cultivation in arid areas under natural conditions.

Key words: Resistance to drought, Zoysia species, PEG-6000, Physiological characteristics