Study on physiological and biochemical characteristics at different leaf positions in Festuca arundinacea during the overwintering period

Festuca arundinacea cv.Barlexas was used to study the physiological and biochemical characteristics of different positions of leaf during overwintering stage. The results showed that the contents of chlorophyll, soluble protein, AsA, total N and K, and activity of antioxidative enzyme in upper part of leaf were significantly lower than other parts, but the contents of GSH and MDA were higher. During the overwintering stage, soluble protein, total N and K contents in different leaf positions had no obvious variation, while the chlorophyll and total P contents decreased at the beginning and then increased. However, the activities of SOD and POD and content of MDA showed an opposite pattern.