Figure 3. Variation in antioxidant activities (A: IC₅₀ of DPPH; B: IC₅₀ of ABTS; C: EC₅₀ of reducing power) in the aqueous extracts of C. paliurus leaves collected from 21 populations.

Data were expressed as mean ± SD of triplicate experiments. Different letters indicate significant difference for each antioxidant activity among the populations (p ≤ 0.05).