Six winter wheat cultivars were used to study the effects of soil moisture deficit on peroxidase(POD)isoenzyme,vegetable yield and some economic charncters.The results;howedthat the POD isoenzyme partern varied with soil water stress.t was different in winter wheat varieties and related to vegetable growth duration.POD isoenzyme bands and activity increased in the three drought resistant cultivars under soil moisture deficit condition at the shoot elongat-ing phase, but the bands did not increase in two other drought susceptible cultivars. The differ-ent performance observed under water stress conditions between drought resistant and susceptible wheat cultivars may be related to their adaptability to drought .