Figure 4. Effects of CoCl2 and paclobutrazol at different concentrations on production of salvianolic acid B, rosmarinic acid and caffeic acid in S. miltiorrhiza hairy roots.
GA3, gibberellin acid 3; Eth, ethephon. Different letters indicate significant difference at p≤0.05 using Tukey test test. Means ± standard deviation (S.D.) (n = 3) are shown.