Figure 5.

Effect of NaCl stress on non-photochemical PSII chlorophyll fluorescence in Brassica. Plants of Brassica juncea (black bars) and Brassica napus (grey bars) were exposed to either 0 or 300 mM NaCl and non-photochemical quenching of chlorophyll fluorescence was determined by recording regulated heat dissipation, NPQ (a), and nor-regulated energy dissipation, (Y(NO) (b). Data points represent the means ± SD of three biological replicates. Significant differences are shown with different asterisks (***, ** at p = 0.001 and 0.01, respectively).