Mixed model ANCOVA for <i>M. polymorpha</i> and <i>E. medicae</i> isolates from non-serpentine and serpentine soil origins grown together in non-serpentine and serpentine destination soils in the greenhouse¹.

1Random effects reflecting the main plot, split-plot and split-split-plot levels of organization of the factorial experimental design were not of experimental interest and are not shown. Bonferroni correction for two hypotheses per test yields alpha = 0.025 as a threshold for significance; F-statistics in bold are significant. †P<0.05; a, P<0.025; b, P<0.01; c, P<0.001; d, P<0.0001. Abbreviations: P, plant; R, rhizobium; div, diversity; df, degrees of freedom; n, numerator; d, mean denominator; Ln, natural log transform; Sqrt, square-root transform; num, number.