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Figure 1. 

Differential behavior of wheat genotypes within each minimal solution treatment: (a) control, (b) 0.15 mmol_c L⁻¹ of Al, (c) 0.15 mmol_c L⁻¹ of Al + 2 mmol_c L⁻¹ of Mg, and (d) 0.15 mmol_c L⁻¹ of Al + 10 mmol_c L⁻¹ of Mg, for the variable DIF after 48 h of exposure. Means followed by the same letters do not differ significantly by the LSD test at p < 0.01. Error bars express the standard error of the mean (n = 3).

Figure 2. 

Differential behavior of maize genotypes within each treatment in minimum solution: (a) control, (b) 0.15 mmol_c L⁻¹ of Al, (c) 0.15 mmol_c L⁻¹ of Al + 2 mmol_c L⁻¹ of Mg, and (d) 0.15 mmol_c L⁻¹ of Al + 10 mmol_c L⁻¹ of Mg, for the DIF variable after 48 h of exposure. Means followed by the same letters do not differ significantly by the LSD test at p < 0.01. Error bars express the standard error of the mean (n = 3).

Figure 3. 

Effects of Al and Mg concentrations on two wheat cultivars (BH 1146 and Anahuac) and two wheat lines (L01 and L14), after 48 h of exposure.

Figure 4. 

Effects of Al and Mg concentrations on two maize hybrids (AG 9025 and K 9606) and two maize inbred lines (Al 237 and Al 53), after 48 h of exposure.

Figure 5. 

Effect of solutions containing Al (0.15 mmol_c L⁻¹), without and with Mg (2 or 10 mmol_c L⁻¹), on the variable DIF after 48 h of exposure of wheat genotypes (a) Anahuac, (b) BH 1146, (c) L01, and (d) L14. Means followed by the same letters do not differ significantly by the LSD test at p < 0.01. Error bars express the standard error of the mean (n = 3).

Figure 6. 

Effect of solutions containing Al (0.15 mmol_c L⁻¹), without and with Mg (2 or 10 mmol_c L⁻¹), on the variable DIF after 48 h of exposure of maize genotypes (a) Al 53, (b) Al 237, (c) AG 9025, and (d) K 9606. Means followed by the same letters do not differ significantly by the LSD test at p < 0.01. Error bars express the standard error of the mean (n = 3).