Photosynthetic parameters of wheat cultivars Shimai and Xiaoyan60 under the microbe and salt stress treatments. Control, C7, Th4, and Th6 represent uncoated seeds, C7 seed coating, Th4 seed coating, and Th6 seed coating, respectively. The salt stress levels were 0 mM NaCl and 200 mM NaCl. The values are the means of three replicates ± SE (n = 3). (A) Net photosynthesis (A), (B) stomatal conductance (gs), (C) intercellular CO2 (Ci), (D) transpiration (E), and (E) water use efficiency (WUE). The wheat cultivars: Shimai in white-gray bars and Xiaoyan60 in white-gray bars with course pattern. Different letters denote significant differences between the treatments and the cultivars according to Tukey-adjusted comparisons (p < 0.05). Means sharing a letter are not significantly different.