Relative host-growth effects of ancestral versus lab evolved Bradyrhizobium.

1Mean relative growth effects of each Bradyrhizobium strain (Rel Grow) from ancestral (ancest.) and evolved strains (evolv.) is measured in grams (g) with standard error (se) by subtracting the dry biomass of control plants from their size-matched inoculated plant.2N, F and p values are given for a two-tailed ANOVA comparing relative growth effects of each strain in ancestral (ancest.) and evolved (evolv.) cultures.