Figure 1.

Embryogenic callus induction of wheat (Triticum aestivum L.) on MS medium supplemented with different concentrations of AgNO₃ and Ag-NPs. (A): Control (without AgNO₃ and Ag-NPs); (B): 2 mg L⁻¹ AgNO₃ treatment; (C): 4 mg L⁻¹ AgNO₃ treatment; (D): 6 mg L⁻¹ AgNO₃ treatment; (E): 8 mg L⁻¹ AgNO₃ treatment; (F): 2 mg L⁻¹ AgNO₃-NP treatment; (G): 4 mg L⁻¹ AgNO₃-NP treatment; (H): 6 mg L⁻¹ AgNO₃-NP treatment; (I): 8 mg L⁻¹ AgNO₃-NP treatment. The red arrows indicate the presence of somatic embryos (S.E.) in (B,F).