The inhibitory effects of chitosan and methyl jasmonate on A. Alternata decay development in artificially infected wounds tomato fruit. A. control B. 500 ml/l methyl jasmonate C. 0.1% Chitosan þ 500 ml/l methyl jasmonate D. 0.1% Chitosan E. 1% Acetic acid. Significant differences (p < 0.05) between means are indicated by letters above histogram bars. Where the letters are the same, there is no significant difference between different treatments