Fig. 2.

Shoot and root mass (g; mean ± SD) of Rudbeckia laciniata and Solidago gigantea grown in the fallow and river valley soils. Within each plant species, the lowercase letters above the bars indicate the statistically significant interaction between the fungus and soil effects; the different letters above the bars indicate statistically significant differences; for each P < 0.05 (see Table 2 for details)