Table 3 Linear regression analyses of colony counts (y) and levels (x) of dissolved oxygen reduction from that in the control Hoagland’s solution by Phytophthora species and exposure time z
From: Oxygen stress reduces zoospore survival of Phytophthora species in a simulated aquatic system
Species | Exposure (h) | Intercept ( a) | Slope ( b) | P |
|---|---|---|---|---|
P. megasperma | 0 (10 min) | 18.2 | -1.0 | 0.0936 |
2 | 11.3 | -0.2 | 0.6267 | |
4 | 9.9 | -0.8 | 0.0104 | |
8 | 7.4 | -0.3 | 0.2903 | |
24 | 8.4 | -0.7 | 0.0292 | |
48 | 7.6 | -0.9 | 0.0015 | |
72 | 4.5 | -0.3 | 0.0724 | |
P. nicotianae | 0 | 7.8 | 0.8 | 0.1067 |
2 | 25.0 | -1.2 | 0.0548 | |
4 | 28.5 | -2.6 | 0.0008 | |
8 | 12.3 | -0.4 | 0.4421 | |
24 | 5.1 | -0.2 | 0.4100 | |
48 | 3.6 | 0.0 | 0.8670 | |
72 | 2.2 | 0.1 | 0.3973 | |
P. pini | 0 | 9.1 | 0.4 | 0.2462 |
2 | 32.6 | -0.3 | 0.6893 | |
4 | 37.2 | -2.1 | 0.0002 | |
8 | 20.8 | -1.3 | < 0.0001 | |
24 | 14.4 | -0.8 | 0.0034 | |
48 | 7.4 | -0.3 | 0.2382 | |
72 | 8.3 | -0.5 | 0.0313 | |
P. tropicalis | 0 | 27.8 | -1.8 | 0.0156 |
2 | 31.4 | -1.3 | 0.0749 | |
4 | 29.7 | -0.3 | 0.6712 | |
8 | 22.5 | -0.1 | 0.8042 | |
24 | 7.8 | -0.3 | 0.1730 | |
48 | 0.7 | 0.4 | 0.0008 | |
72 | 0.4 | 0.2 | 0.0079 |