1. The document summarizes the results of a study comparing the drought resistance of Agropyron elongatum L. and Triticum aestivum L.cv.Chinese Spring. 2. The study found that A. elongatum L. had a higher relative water content, relative water loss, water use efficiency, and yield stability than T. aestivum under drought conditions. 3. A. elongatum also exhibited a higher mesophyll stability index between -3 MPa, -7 MPa and -5 MPa hydrostatic pressures.