Figure 1:
Effect of Meloidogyne enterolobii, M. incognita, and M. javanica on root system volume, mass, and length of Eucalyptus grandis seedlings grown in a greenhouse for six months. Values are the mean of 10 seedlings per nematode species. “*” denotes a significant difference relative to the control according to the Mann–Whitney test at 5% significance.
Figure 2:
Effect of Meloidogyne enterolobii, M. incognita, and M. javanica on root system length and volume of eucalypt seedlings grown in a greenhouse for six months. A) Eucalyptus saligna. B, C) hybrid E. grandis × E. urophylla. Values are the means of 10 seedlings per eucalypt species or hybrid, per nematode species. “*” denotes a significant difference relative to the control according to the Mann-Whitney test at 5% significance.
Table 1:
Reproduction factor and host status of Eucalyptus spp. and Corymbia citriodora to Meloidogyne enterolobii, M. incognita, and M. javanica, after cultivation in greenhouse for six months
| Species | M. enterolobii | M. incognita | M. javanica |
|---|---|---|---|
| E. camaldulensis | 0.22a (R)b | 0.52 (R) | 1.04 (S) |
| E. cloeziana | 0.60 (R) | 0.46 (R) | 0.62 (R) |
| E. dunni | 0.50 (R) | 0.82 (R) | 0.74 (R) |
| E. grandis | 0.38 (R) | 0.62 (R) | 0.42 (R) |
| E. saligna | 0.94 (R) | 4.82 (S) | 3.44 (S) |
| E. grandis × E. urophylla | 1.72 (S) | 0.48 (R) | 2.46 (S) |
| C. citriodora | 0.94 (R) | 0.90 (R) | 0.54 (R) |
b R denotes resistance, and S denotes susceptibility according to the criteria of Oostenbrink (1966).
Supplementary Figure 1:
A) Eucalypt seedlings cultivated in a greenhouse for assessment of host status to and damage by Meloidogyne incognita, M. javanica, and M. enterolobii. B) Corymbia citriodora. C) Eucalyptus saligna. D) Hybrid E. grandis × E. urophylla. E) E. grandis. F) E. dunni. G) E. cloeziana. H) E. camaldulensis.
Supplementary Table 1:
Mean ± error of shoot height (SH), stem diameter (SD), dry mass of leaves (ML), root-system mass (RSM), root system volume (RSV), and root-system length (RSL) of seedlings of Eucalyptus spp. and Corymbia citriodora when inoculated with Meloidogyne enterolobii, M. incognita or M. javanica, and cultivated in a greenhouse for six months.
| Treatments | SH (cm) | SD (mm) | ML (g) | RSM (g) | RSV (cm3) | RSL (cm) |
|---|---|---|---|---|---|---|
| Eucalyptus camaldulensis | ||||||
| Meloidogyne enterolobii | 37.40 ± 0.72a | 3.38 ± 0.10 | 0.76 ± 0.10 | 3.06 ± 0.44 | 4.0 ± 0.25 | 21.4 ± 0.78 |
| Meloidogyne incognita | 37.20 ± 0.79 | 3.62 ± 0.12 | 0.89 ± 0.11 | 2.99 ± 0.24 | 2.9 ± 0.37 | 21.2 ± 0.84 |
| Meloidogyne javanica | 34.50 ± 0.57 | 3.52 ± 0.11 | 0.89 ± 0.11 | 3.32 ± 0.31 | 2.8 ± 0.55 | 20.20 ± 0.42 |
| Control | 39.01 ± 0.88 | 3.39 ± 0.10 | 0.92 ± 0.14 | 3.06 ± 0.23 | 4.2 ± 0.41 | 21.4 ± 0.55 |
| Corymbia citriodora | ||||||
| Meloidogyne enterolobii | 33.30 ± 0.53 | 3.01 ± 0.07 | 0.81 ± 0.07 | 4.23 ± 0.15 | 4.0 ± 0.33 | 20.0 ± 0.59 |
| Meloidogyne incognita | 34.06 ± 0.42 | 3.03 ± 0.09 | 0.70 ± 0.11 | 2.53 ± 0.17 | 3.8 ± 0.35 | 20.5 ± 0.22 |
| Meloidogyne javanica | 30.60 ± 0.69 | 2.90 ± 0.08 | 0.69 ± 0.06 | 4.13 ± 0.19 | 3.1 ± 0.31 | 20.0 ± 0.47 |
| Control | 33.33 ± 0.53 | 3.26 ± 0.08 | 0.81 ± 0.07 | 4.15 ± 0.14 | 4.5 ± 0.34 | 20.9 ± 0.48 |
| Eucalyptus cloeziana | ||||||
| Meloidogyne enterolobii | 28.61 ± 0.93 | 3.26 ± 0.08 | 1.00 ± 0.14 | 2.98 ± 0.12 | 3.6 ± 0.55 | 18.8 ± 0.28 |
| Meloidogyne incognita | 27.90 ± 0.97 | 3.30 ± 0.11 | 1.10 ± 0.26 | 3.26 ± 0.22 | 3.4 ± 0.39 | 19.2 ± 0.38 |
| Meloidogyne javanica | 28.70 ± 0.97 | 3.25 ± 0.12 | 1.07 ± 0.14 | 4.98 ± 0.13 | 4.9 ± 0.50 | 18.8 ± 0.32 |
| Control | 32.50 ± 1.00 | 3.48 ± 0.09 | 1.26 ± 0.12 | 4.38 ± 0.14 | 3.8 ± 0.47 | 19.2 ± 0.24 |
| Eucalyptus dunni | ||||||
| Meloidogyne enterolobii | 38.51 ± 0.76 | 4.18 ± 0.14 | 1.2 ± 0.16 | 2.72 ± 0.42 | 3.6 ± 0.38 | 18.8 ± 0.23 |
| Meloidogyne incognita | 37.17 ± 0.84 | 4.24 ± 0.12 | 0.96 ± 0.15 | 3.45 ± 0.47 | 3.2 ± 0.39 | 20.3 ± 0.38 |
| Meloidogyne javanica | 41.00 ± 0.81 | 4.27 ± 0.13 | 1.0 ± 0.11 | 3.07 ± 0.49 | 3.0 ± 0.51 | 18.8 ± 0.33 |
| Control | 41.20 ± 0.70 | 4.12 ± 0.12 | 1.23 ± 0.11 | 4.99 ± 0.44 | 4.6 ± 0.39 | 19.7 ± 0.39 |
| Eucalyptus grandis | ||||||
| Meloidogyne enterolobii | 34.28 ± 0.78 | 3.44 ± 0.13 | 0.48 ± 0.07 | 2.89 ± 0.37* | 2.50 ± 0.40* | 19.3 ± 0.49* |
| Meloidogyne incognita | 36.78 ± 0.69 | 3.81 ± 0.10 | 0.83 ± 0.09 | 4.96 ± 0.64 | 3.40 ± 0.43* | 20.0 ± 0.29* |
| Meloidogyne javanica | 36.56 ± 0.78 | 3.97 ± 0.11 | 0.45 ± 0.05 | 3.08 ± 0.45* | 2.60 ± 0.39* | 19.8 ± 0.39* |
| Control | 36.52 ± 0.92 | 3.84 ± 0.12 | 0.60 ± 0.07 | 5.14 ± 0.78 | 4.40 ± 0.49 | 21.5 ± 0.41 |
| Eucalyptus saligna | ||||||
| Meloidogyne enterolobii | 24.13 ± 0.62 | 3.75 ± 0.11 | 1.3 ± 0.16 | 4.86 ± 0.94 | 2.3 ± 0.61 | 19.0 ± 0.63* |
| Meloidogyne incognita | 24.18 ± 0.65 | 3.82 ± 0.11 | 1.37 ± 0.13 | 7.87 ± 1.23 | 3.9 ± 0.76 | 20.8 ± 0.45* |
| Meloidogyne javanica | 24.85 ± 0.59 | 3.49 ± 0.10 | 1.05 ± 0.14 | 5.73 ± 1.13 | 2.4 ± 0.57 | 20.3 ± 0.61* |
| Control | 27.52 ± 0.54 | 3.58 ± 0.53 | 1.25 ± 0.15 | 6.74 ± 1.08 | 3.1 ± 0.49 | 22.5 ± 0.67 |
| Eucalyptus grandis × Eucalyptus urophylla | ||||||
| Meloidogyne enterolobii | 20.30 ± 0.89 | 3.60 ± 0.10 | 1.06 ± 0.09 | 3.43 ± 0.5 | 1.20 ± 0.13* | 20.3 ± 1.01* |
| Meloidogyne incognita | 20.60 ± 0.59 | 3.75 ± 0.10 | 1.07 ± 0.17 | 2.41 ± 0.44 | 1.30 ± 0.15* | 20.6 ± 0.63* |
| Meloidogyne javanica | 24.26 ± 0.58 | 4.19 ± 0.27 | 1.32 ± 0.15 | 3.16 ± 0.46 | 1.30 ± 0.19* | 24.2 ± 0.53 |
| Control | 27.67 ± 0.84 | 3.54 ± 0.42 | 1.19 ± 0.16 | 3.74 ± 0.39 | 2.01 ± 0.20 | 24.0 ± 0.66 |