Figure 2: Leaf disc senescence under stress as measured by chlorophyll content. Chlorophyll content (μg/g fresh weight) of leaf discs from Untransformed Control (UC) and transgenic (line L1 and L5) Brassica juncea plants, kept for four days at different concentrations of NaCl (panel a), mannitol (panel b). The values are means ± SE from three independent experiments. The photographs of UC and transgenic leaf discs under the corresponding treatments are presented below each plot.