Fig. 7

Effect of the strain of Trichoderma longibrachiatum T6 on Na⁺ (a and b) and K⁺ (c and d) concentration, and K⁺/Na⁺ ratio (e and f) in wheat seedling under NaCl stress. Where a, c and e represent Na⁺ and K⁺ concentration, and K⁺/Na⁺ ratio in the shoot of wheat seedling; b, d and f represent Na⁺ and K⁺ concentration, and K⁺/Na⁺ ratio in the root of wheat seedling. The line bars represent the standard errors of the means. Different letters denote significant difference at the P < 0.05 level by Duncan’s new multiple range test (n = 12). The treatments are detailed in the footnote of Fig. 3