Fig. 3.

Effect of hygromycin on explants after 20 days a at 0 mg/L hygromycin, b at 5 mg/L hygromycin, c at 10 mg/L hygromycin, d at 15 mg/L hygromycin, e at 20 mg/L hygromycin, f at 25 mg/L hygromycin, g at 30 mg/L hygromycin and h at 35 mg/L hygromycin