Fig. 1.

Growth of banana plants following treatment with BTH and Foc 4 inoculation. a Two-month-old banana plants (with four true fully expanded leaves) were pre-treated with H₂O, 50 mg/L BTH or 100 mg/L BTH. The roots were infected with Foc 4 or untreated one day later. Plants were photographed 4 weeks post inoculation; b) Fusarium wilt disease incidence rate (calculated by the formula: number of infected plants/ total number of inoculated plants) of Foc 4 inoculated or untreated plants. Data are presented as mean ± SD of three independent assays, and the different letters indicate significant differences (P < 0.05) according to ANOVA test. The total number of plants observed was > 20 in each group from three biological replicates