Fig. 9.

Pooled data on relationship between the effect of cadmium on genotypic differences (SGECd^t/SGE ratio) in root biomass and shoot cadmium concentration. Black points show experimental data with cadmium concentrations in nutrient solution and reference: 1, 1 μM CdCl₂ (this study); 2, 4 μM CdCl₂ (this study); 3, 2.5 μM CdCl₂ (Tsyganov et al., 2004); 4, 3 μM CdCl₂ (Tsyganov et al., 2007); 5, 4 μM CdCl₂ (Malkov et al., 2007). Dash and dotted lines show linear and exponential fitting, respectively.