Fig. 4

The histochemical staining analysis with DAB (3,3’ diaminobenzidine) and NBT (nitroblue tetrazolium chloride); the leaves of CK and transgenic cotton lines (ST103-OE1 and ST103-OE2) were grown in the soil for a week, moved to the hydroponic culture for 4 days and treated with either 0 mmol·L⁻¹ NaCl or 140 mmol·L⁻¹ NaCl for a day prior staining A CK and transgenic cotton lines (ST103-OE1 and ST103-OE2) treated with DAB staining. Bar = 1 cm B CK and transgenic cotton lines (ST103-OE1 and ST103-OE2) treated with NBT staining. Bar = 1 cm