Figure 2.

(A) Comparison of a root system of the hvatr.g mutant and cv. ‘Sebastian’ grown for 7 days in Magnavaca solution at pH 4.0 without Al and with 5, 10, and 15 μM of bioavailable Al³⁺ ions. (B) Main root parameters of ‘Sebastian’ and the hvatr.g mutant grown for 7 days in Magnavaca solution at pH 4.0 without Al and with 5, 10, and 15 μM of bioavailable Al³⁺ ions. The parameters are presented as direct values (in centimeters) and as percentage, where 100% is the value for untreated roots of the genotype. Presented parameters: length of the longest root, total length of the whole root system (seminals + laterals), and average diameter of seminal roots. Statistically significant differences between different doses of Al within each genotype were assessed using ANOVA (P < 0.05) followed by Tukey’s honestly significant difference test (Tukey HSD test, P < 0.05) and are indicated by different uppercase letters for the ‘Sebastian’ variety and by different lowercase letters for the hvatr.g mutant.