Fig. 1

Effect of phytohormone components on callus differentiation rate. MS was the basic medium (Murashige & Skoog 1962): sucrose 30 g•L⁻¹ and agar 8 g•L⁻¹. DM-1: 2 mg•L⁻¹ KT and 2 mg•L⁻¹ ABA; DM-2: 2 mg•L^− 1 KT and 3 mg•L^− 1 ABA; DM-3: 0.2 mg•L^− 1 2,4-D, 2.5 mg•L^− 1 KT, and 2 mg•L^− 1 ABA; DM-4: 0.5 mg•L^− 1 2,4-D, 2 mg•L^− 1 KT, and 2 mg•L^− 1 ABA. 2,4-D, 2,4-dichlorophenoxyacetic acid; NAA, 1-naphthylacetic acid; KT, kinetin; ABA, abscisic acid; DM: differentiation medium. Different letters above the bars indicate significant differences (P < 0.05)