Fig. 1

Effects of eCO2 concentration and B. impatiens infestation on growth parameters in Chinese chives. (A) Leaf width; (B) Leaf thickness; (C) Plant height; (D) Stem diameter. Asterisks of *, ** and ns respectively represent P < 0.05, P < 0.01, and P > 0.05 between two CO2 concentration. Lowercase letters of a, b and c denote significant differences (P < 0.05) among three infestation densities at 400 µL/L. Capital letters of A, B and C indicate significant differences (P < 0.05) among three infestation densities at 800 µL/L.