Drought Stress Impact on Some Biochemical and Physiological Traits of 4 Groundcovers (Lolium perenne, Potentilla spp, Trifolium repens and Frankinia spp) with Potential Landscape Usage

Stress management is considered as an important factor in nowadayslandscape. therefore this research was conducted using a factorial experimentbased on a randomized completely design with regulated deficit irrigation atfour levels (100, 75, 50, and 25% of lawn irrigation requirement) and threereplicates to evaluate some biochemical and physiological traits on fourgroundcover plants (lolium perenne, potentilla spp., trifolium repens andfrankinia spp.) with the potential use in landscape. results showed thatfrankinia spp. and 75% lawn irrigation requirement bears the highest prolinecontent with same amount (0.84 mg/g fresh weight) and on the other handhighest (32.61 mg/g fresh weight) and lowest (15.95 mg/g fresh weight)chlorophyll content was shown in control (irrigation treatments) and frankiniaspp., respectively. for total soluble carbohydrates content, highest amount(1.54 mg/g fresh weight) belongs to lolium perenne whereas the lowest (0.79mg/g fresh weight) belongs to trifolium repens. trifolium repens also had themost dpph free radical-scavenging assay (75.05%) among species. in general,regulated deficit irrigation affects different biochemical characteristics of examinedgroundcover plants significantly, but as a managing method applyingit to below the damaging point for landscape plants can be a good method forwater consumption management in this manner.