Figure 3.
Effects of different drought stress induced by polyethylene glycol (PEG-6000) treatments on the longest root lengths of XM (high-grain Cadmium (Cd)-accumulating genotype) and YM (low-grain Cd-accumulating genotype) under 100 µmol L−1 of Cd stress. The different letters indicate significant differences at p < 0.05 according to a least significant difference (LSD) test.