Mitigation of Salt Stress by Foliar Application of Proline in Rice

A pot experiment was conducted at Bangladesh Agricultural University to evaluating the effect of exogenous application of proline on the growth and yield of rice under salt stress condition. There were six treatments including T₁ (Control), T₂ (25 mM NaCl), T₃ (50 mM NaCl), T₄ (25 mM NaCl + Proline), T₅ (50 mM NaCl + Proline) and T₆ (Proline). A salt sensitive variety of rice (cv. BRRI dhan29) was used as a test crop. Salinity (NaCl) was induced at vegetative growth stage (35 days after transplanting) of rice. Proline of 25 mL plant^-1 was applied as foliar on the same day of NaCl treatment. All plants virtually died when they were treated with 50 mM NaCl (T₃). On the other…