Figure 7.

Biocontrol activity of T. harzianum strains T673 and T673-F against F. oxysporum f.sp.cucumerinum (Foc). (A): Phenotype of plants inoculated with Foc, or co-inoculated with Foc and T. harzianum strains T673 or T673-F. Non-inoculatd plants and plants inoculated with Foc alone served as controls. (B): Disease severity of plants inoculated with Foc alone or co-inoculated with T. harzianum strains T673 or T673-F, as indicated by the disease index (percentage of dead cucumber plants at 13 dpi). Every treatment (n = 8 plants) was performed in three replicates. Data in (A,B) were from plants at 13 dpi, and t-test was used for statistical analysis. Single asterisks indicate significant differences (p < 0.05); double asterisk indicates highly significant differences (p < 0.01).