Exogenous Proline and Glycine Betaine Mediated Upregulation of Antioxidant Defense and Glyoxalase Systems Provides Better Protection against Salt-Induced Oxidative Stress in Two Rice (Oryza sativa L.) Varieties

Figure 1

Leaf relative water content in salt sensitive and salt tolerant rice seedlings induced by exogenous proline and glycine betaine under salt stress. S₁₅₀ and S₃₀₀ indicate 150 mM NaCl and 300 mM NaCl, respectively. Pro and GB indicate 5 mM proline and glycine betaine spray, respectively. Mean (±SD) was calculated from three replicates for each treatment. Bars with different letters (small letters for BRRI dhan49 and capital letters for BRRI dhan54) are significantly different at 𝑃≤0.05 applying DMRT.