Figure 3

The contents of main triterpenoid saponins in callus and plant organs of P. grandiflorus. (A) Platycodin D (PD) content in different samples. (B) Platycoside E (PE) content in different samples. The X axis is the sample name and the Y axis is the content (mg/g DW), DW is dried weight. Bars with different letters within same histogram, represent significant difference at p ≤ 0.01.