Table 7.
Wilting rates of mycorrhizal and non-mycorrhizal plantlets of P. massoniana cell lines after infestation with sterile pine wood nematodes and number of nematodes recovered from the wilted plantlets (45 d after infestation).
| Host plantlets | Number | Time of first symptoms (d) | Wilting ratio (%) | Recovery of nematodes |
|---|---|---|---|---|
| 20-1-4-A | 12 | 11 | 50 | 4445 ± 587 |
| 20-1-4-B | 12 | 12 | 25 | 8575 ± 1716 |
| 20-1-7-A | 12 | 13 | 8.3 | 272 |
| 20-1-7-B | 12 | 13 | 8.3 | 625 |
| 20-1-16-A | 15 | 24 | 40 | 4552 ± 3115 |
| 20-1-16-B | 15 | 16 | 6.7 | 608 |
| CK-A | 9 | – | – | N |
| CK-B | 9 | – | – | N |
Data points represent the mean ± SD. “A” means non-mycorrhizal plantlets. “B” means mycorrhizal plantlets. “N’’ means “not done”. “-” means “none”. “CK” means control (aseptic water).