Effects of trample stress on tillering dynamics and antioxidant enzyme system of Kentucky bluegrass

This research studied the variations of tillers number and antioxidant enzyme system of Kentucky bluegrass (Poa pratensis) under different trample stress and analyzed the correlation between these two indexes under different trample and the effects of trample stress on turfgrass tillering and physiological regulation. The results showed that the tillers of Kentucky bluegrass under trample may be controlled by the coordination functions of H2O2, peroxidase (POD) and superoxide dismutase (SOD). With the increase of the H2O2, content of the increase of POD activity and the decrease of SOD activity, the number of tillers of Kentucky bluegrass decreased.