TABLE 4.
Summary of statistical analyses of effect of each factor (plant and stress treatment) and their interaction on the total variance of lettuce and spinach infectivity for RNA and bacterial count data sets
| PID | Factor | % by which the factor accounted for total variance of data seta |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Infectivity |
RNA titer |
Bacterial count | |||||||
| MNV | SaV | TV | HuNoV | MNV | SaV | TV | |||
| 1 | Interaction | 0.9 | 14.0 | 1.0 | 12.3 | 1.0 | 0.6 | 2.0 | 6.7 |
| Plant | 0.3 | 0.3 | 0.1 | 7.2 | 6.6 | 42 | 6.8 | 24.9 | |
| Stress | 0.6 | 4.1 | 2.6 | 11.6 | 5.6 | 3.9 | 13.4 | 4.6 | |
| 7 | Interaction | 3.1 | — | 7.2 | 4.0 | 6.4 | 1.6 | 6.0 | 9 |
| Plant | 53.9 | — | 45.8 | 3.7 | 15.2 | 65 | 25.6 | 59 | |
| Stress | 15.8 | — | 15.8 | 16.1 | 3.6 | 0.6 | 2.2 | 2.0 | |
| 14 | Interaction | — | — | — | 7.3 | 8.7 | 2.8 | 4.0 | 3.0 |
| Plant | — | — | — | 1.2 | 1.0 | 13.2 | 0.2 | 10.6 | |
| Stress | — | — | — | 17 | 30.2 | 6.4 | 31.9 | 11.8 | |
a
Numbers in bold indicate a significant effect (P < 0.05) for that factor. Statistical analyses were performed by two-way ANOVA. —, no data were available because infectivity titers were below the method's detection limit.