Fig. 4From: Influence of gamma radiation and phenylalanine on secondary metabolites in callus cultures of milk thistle (Silybum marianum L.)Chromatograms of total flavonoids determined in callus cultures of S. marianum L. treated with different combinations of γ-radiation (25 and 50 Gy) and the amino acid precursor Phe (1 mg/l). A: control, B: 1 mg/l Phe, C: 25 Gy γ, D: 25 Gy γ + 1 mg/l Phe, E: 50 Gy γ, F: 50 Gy γ + 1 mg/l PheBack to article page