Figure 9

Effect of virus infection on the SOD, POD, CAT and APX activities. (A) and (B) present the SOD, POD, CAT and APX activities 7 days post inoculation with TMV and CMV. The data are presented as the mean ± standard error of three independent experiments. The values indicated by the different letters are significantly different at P < 0.05, as determined using Duncan’s multiple range tests.