Fig 3. Interacting effects of varying light conditions and AMF colonization on total biomass (a) and shoot/root-ratio (c) and interacting effects of varying light conditions and rhizobial nodulation on total biomass (b) and shoot/root-ratio (d).

Bars are means + s.e. Only significant interactions are given as means of the corresponding factorial combinations, thus (a) and (c) include all rhizobial treatments and (b) and (d) include all mycorrhizal treatments. Different letters indicate statistically different means following Tukey’s post-hoc test (P<0.05).