Fig. 7From: Efficacy of indigenous plant growth-promoting rhizobacteria and Trichoderma strains in eliciting resistance against bacterial wilt in a tomatoEffect of PGPR and Trichoderma strains combined treatments on activity of polyphenol oxidase in tomato seedlings under greenhouse conditions. The values are the mean of three replications and bars represent standard errors. UC-uninoculated control and IC-inoculated control. Means of three replications, followed by the letters according to Duncan’s multiple range tests (DMRT). Means sharing different alphabetical (a–d) in a column significantly different (P < 0.05)Back to article page