FIG 8.

The growth-promoting capacity of strain BY2G20 for maize in the soil environment. The stem diameter (A) and physiological plant height (B) of maize seedlings at different growth days. States of maize growth at 28 days under different treatments: (C) BY2G20⁻ and NaCl⁻, (D) BY2G20⁺ and NaCl⁻, (E) BY2G20⁻ and NaCl⁺, (F) BY2G20⁺ and NaCl⁺. Uniformly sized maize seeds were selected, sterilized for planting, and then thinned at the two-leaf stage. A 200-mL volume of 100 mM NaCl was irrigated 2 days after thinning in the NaCl-treated groups, and the other two groups were irrigated with an equal amount of sterile water. Two days after NaCl treatment, a volume of 200-mL solution containing 10⁶ CFU/mL strain BY2G20 was applied to the maize plants in the strain treated groups, and the other two groups were irrigated with an equal amount of sterile water.