EFFECT OF WATER-STRESS ON DIFFERENT ENZYMATIC-ACTIVITIES IN WHEAT

Wheat genotypes DS-4, Chakwal-86, (better performer) Pavon, DS-17 (poo r performer) were raised under 0, and -0.6 MPa (PEG-6000) for 14 days and harvested to study growth parameter;, activities of selected enzym es and nucleic acid metabolism. It was observed that root and shoot le ngths, root shoot dry weights and activities of enzymes, except that o f peroxidase decreased in all the genotypes subjected to water stress. However, reduction in the activities of enzymes was comparatively les s in better performing genotypes (DS-4 and Chakwal-86).