Figure 1.
The influence of nanoparticulate CeO2 and ZnO on: (a) root and stem length and (b) fresh weight of root and shoot as determined for a single pea plant. Concentrations of nanoparticles are given in mg/L of elemental cerium or zinc, the cultivation time was 12 days. Roots are represented by grey while above-ground parts are in green. Vertical bars represent standard deviations (n = 6). Distinct letters show the statistically significant differences among treatments as calculated with Tukey’s HSD post hoc test. The probability level p = 0.95 was applied.