Endophytic Bacillus subtilis Strain E1R-J Is a Promising Biocontrol Agent for Wheat Powdery Mildew

Table 3

Biocontrol efficacies of different concentrations of bacterial cell suspension and fermentation liquid without bacterial cell of strain E1R-j on powdery mildew on seedlings of wheat tested in greenhouse.

Concentration of bacterial cell suspension (cfu mL^−1)	10^11	10^9	10^7	Water control
Disease index^a	55.55	39.01	44.11	66.34
Control efficacy (%)	33.51 a	41.20 a	16.27 b	—
Fold dilution of fermentation liquid without bacterial cell	0×	5×	10×	Water control
Disease index^a	19.65	19.34	25.76	53.48
Control efficacy (%)	63.26 a	63.84 a	51.83 b

^aThe severity of powdery mildew was recorded 10 days after Blumeria graminis f. sp. tritici inoculation. The disease index values were calculated using the formulas in Section 2.2.
Means followed by the same letters within each treatment are not significantly different at the level of confidence according to LSD’s multiple range test.