Fig. 1

The effects of AMF inoculation and different copper concentrations on the height (a) and biomass (b) of Vetiveria zizanioide. Note: Different letters at the top of the bar graphs indicate significant differences (P < 0.05) at different levels of copper addition and with or without AMF inoculation treatment. NM and M are for plants not inoculated with AMF treatment and plants inoculated with AMF treatment.