Fig. 5

Effect of varying light on enzymatic antioxidants such as SOD activity (A), POD activity (B), CAT activity (C), and ferric reducing power (D) in the leaves of five mutants and wild type Choy Sum. Data are the mean of six replicates and the SE (n = 6) are shown as vertical bars. The mean marked with different letters indicate significant differences between treatments at p-value < 0.05, as determined with Tukey’s HSD test