Figure 8
From: Responses of butter leaf lettuce to mixed red and blue light with extended light/dark cycle period
The contents of Vitamin C and nitrate of lettuce exposed to different L/D cycle treatments of RB. Different letters for the same parameter indicate significant differences at the 5% level, according to the Tukey’s test (n = 3). The bars represent the standard errors. L/D—light/dark. L16/D8—16 h light/8 h dark (as control), L24/D12—24 h light/12 h dark, L48/D24—48 h light/24 h dark, L96/D48—96 h light/48 h dark, L120/D60—120 h light/60 h dark.
