Table 3.
Assessment of biocontrol activity of Pseudomonas simiae PICF7 and selected mutants against Verticillium dahliae V937I (defoliating pathotype).
| Experiment I | Experiment II | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Disease Parameters | Disease Parameters | |||||||||
| Treatments | FS | Final DI (%) | Final DII | M (%) | AUDPC | FS | Final DI (%) | Final DII | M (%) | AUDPC |
| V. dahliae | 2.13a | 91.67 | 0.53 | 25 | 88.11a | 2.79a | 91.67 | 0.70 | 41.67 | 101.64a |
| V. dahliae/PICF7 | 1.17b | 75 | 0.29 | 16.67 | 31.43b | 2.04ab | 66.67 | 0.51 | 33.33 | 83.75ab |
| V. dahliae/Bfm8 | 0.63b | 91.67 | 0.15 | 0 | 19.71b | 1.58bc | 66.67 | 0.40 | 16.67 | 59.00bc |
| V. dahliae/Bfm9 | 1.00b | 75 | 0.25 | 0 | 29.24b | 1.50bc | 50 | 0.38 | 33.33 | 56.10bc |
| V. dahliae/Phy17 | 0.81b | 83.33 | 0.2 | 0 | 19.02b | 0.96c | 50 | 0.24 | 8.33 | 38.19c |
| V. dahliae/Phy18 | 0.85b | 75 | 0.21 | 8.33 | 24.35b | 1.04c | 33.33 | 0.26 | 16.67 | 30.06c |
| V. dahliae/Cop1 | 1.27b | 83.33 | 0.31 | 8.33 | 40.09b | 1.56bc | 66.67 | 0.39 | 25 | 49.58bc |
| V. dahliae/Cop33 | 0.92b | 91.67 | 0.22 | 0 | 31.51b | 1.31bc | 66.67 | 0.33 | 16.67 | 43.44bc |
FS, mean (n = 12) of disease severity symptoms (from 0 to 4) scored at the end of the experiments. Final DI, final disease incidence (%). Final DII, final disease intensity index (ranging 0–1) calculated with data on incidence and severity of symptoms. M, dead plants at the end of the experiments (%). AUDPC, area under the disease progress curve. Data are the average of three randomly distributed blocks each with four pots (plants) per treatment. In each column, values followed by different letters are significantly different according to Fisher’s protected LSD test (p < 0.05). All disease parameters were calculated at the end of the experiments (100 days).