Fig 3. Influence of Trichoderma on the ratio of ion content in the leaves and roots of maize grown on saline–alkaline soil.

(A) K⁺/Na⁺ ratio. (B) Ca²⁺/Na⁺ ratio. X–L: XY335 leaves, J–L: JY417 leaves, X–R: XY335 roots, J–R: JY417 roots. The determination of these parameters was done on the 27^th d after T. asperellum application. Note: Different lowercase letters in the figure indicate the significant differences (P < 0.05) between the different treatments. Vertical bars represent the standard error of means (±S.E).