Fig. 3
Effect of low-temperature storage on oxidative stress in terms of SOD (a), CAT (b), APX (c) activities, O2− producing rate (d), proline content (e) and soluble sugar content (f) such as glucose, fructose, and sucrose in sweetpotatoes for 14 d. Vertical bars represent the mean ± SE. Different letters indicate statistically significant differences (p<0.05) by the LSD test