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Mean number of individuals germinated (A), shoot height (B), root:shoot biomass ratio (root:shoot; C), leaf N isotope ratios (δ15N; D), and root exudate concentration (E) of control and inoculated groups in dry and wet families. Letters indicate statistically significant differences among the four groups at P ≤ 0.05. Error bars represent ± SE. N = 4. Seedlings were ~11 months old for all measurements except germination (14 days old) and height (~9 months old).
