696535.fig.006
Figure 6: Scanning electron micrographs of roots of mung (Vigna radiata) (a) control, (b) at 20 ppm with EDAX (c) and (d) and (e) at 2000 ppm with EDAX (f) and (g) of nano-ZnO treatment. The energy dispersive spectroscopy shows the Zn peaks obtained from points indicated by the arrow.