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Root enzyme activities in DH32-29 (A, C, E, G, I, K) and G9 (B, D, F, H, J, L) seedlings treated with different levels of Al and P. Bars represent means ± standard deviations (n = 3). Differences among the six treatments were analyzed using 2 (Al) × 3 (P) analysis of variance. Different letters above the bars indicate a significant difference at P < 0.05.
