TABLE 3.
Effects of Pseudomonas strains on mycorrhiza formation and biomass production by tomato plants growing for either 6 or 8 weeks in soil microcosms in the greenhouse
| Pseudomonas strain | Biomass production (g [dry wt])
|
Mycorrhizal root length (%) after:
|
||||
|---|---|---|---|---|---|---|
| Shoots after:
|
Roots after:
|
|||||
| 6 weeks | 8 weeks | 6 weeks | 8 weeks | 6 weeks | 8 weeks | |
| None (control) | 0.69 aa | 0.85 a | 0.25 a | 0.31 a | 35 a | 43 a |
| F113 (DAPG+) | 0.60 a | 1.15 b | 0.23 a | 0.43 ab | 52 b | 68 b |
| F113G22 (DAPG−) | 0.63 a | 1.23 b | 0.24 a | 0.42 ab | 58 b | 71 b |
| F113(pCU203) (DAPG overproducer) | 0.75 a | 1.18 b | 0.30 a | 0.50 b | 44 ab | 57 ab |
a
Values are the means of values for five replicates. Values in a column not followed by the same letter differ significantly at P = 0.05.