Relationship between the fall dormancy of alfalfa and activities of SOD and POD

The experiment was conducted to explore the relationship between fall dormancy and superoxide dismutase (SOD) and peroxidase (POD) activities of alfalfa under short day (8 h light/16 h dark) condition. The results showed that SOD and POD activities increased with the increase of fall dormancy, and the fall dormancy alfalfa (Vernal) was the highest and followed by the semifall dormancy alfalfa (CW 502), and nonfall dormancy alfalfa (CUF101); SOD and POD activities of three different fall dormancy alfalfa increased with the elongation of growth period.