Figure 4
Copper (a), manganese (b) and iron (c) concentrations (µg g−1) and total metal content per single plant (µg plant−1) (d) in sugar pea upon ZnO administration. Roots are indicated in yellow while shoots are in green. Vertical bars represent standard deviation. Distinct letters show the statistically significant difference as calculated with the Tukey’s HSD test, roots and shoots are treated separately. The significance level α = 0.05 was applied.
