Fig. 1From: Salinity tolerance improvement of in vitro propagated Paulownia tomentosa using prolineIn vitro propagation of Paulownia tomentosa under the effect of different plant growth regulators (BA, Kin, and IBA) concentrations. a MS free of hormones and b MS + BA at 0.2 mg/l, and Kin and IBA at 0.1 mg/lBack to article page