Fig 3.

Effects of low light treatment on photosynthetic rate (P_n) (A), stomatal conductance (G_s) (B), intercellular CO₂ concentration (C_i) (C), and transpiration rate (T_r) (D) of purple pak-choi seedlings. The data are the mean of three replicates, with SDs shown as vertical bars. The means marked with different letters indicate significant differences between treatments at p<0.05, as determined with Duncan’s multiple range test. Different lower-case letters at each time point indicate significant differences between treatments.