Influence of turfgass stress resistance and green enhancer on chilling resistance of Zoysia tenuifolia

In order to study the effect of turfgass stress resistance and green enhancer chilling resistance on turfgrass, chlorophyll content, activity of CAT, SOD, POD and PAL were measured in leaves of Zoysia tenuifolia with the application of turfgass stress resistance and green enhancer before or after natural low temperature. The results showed that chlorophyll content and the activity of CAT and POD increased after the application of turfgass stress resistance and green enhancer. However, there were no response of the activity of SOD and PAL. Compared with control, the activity of CAT and POD was significantly increased with the application of turfgass stress resistance and green enhancer before or after the natural low temperature. The effect of turfgass stress resistance and green enhancer was the best when applied before the natural low temperature. Therefore, turfgass stress resistance and green enhancer was recommended to apply before the natural low temperature in order to effectively improve the ability of reactive free radicals, reduce its damages to biological membrane and improve the chilling resistance and ornamental effects.