Fig. 6

The change in non-enzymatic antioxidant effect of Choy Sum mutants and wild type grown under light and shade. Five Choy sum mutant and wild-type plants were used to quantify carotenoid content (A), Total proline content (B), Phenol content (C), and Flavonoid content (D). Bars represent mean ± SE (n = 6). The mean marked with different letters indicate significant differences between treatments p < 0.05, as determined with Tukey’s HSD test