Table 5.
Differential host test for characterizing Meloidogyne floridensis and M. arenaria isolates.
| Differential hostsa | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tomato | Cotton | Peanut | Watermelon | Pepper | Tobacco | |||||||||||||
| Meloidogyne spp. and isolate code | GIb | EMIb | RFc | GI | EMI | RF | GI | EMI | RF | GI | EMI | RF | GI | EMI | RF | GI | EMI | RF |
| M. floridensis | ||||||||||||||||||
| Mf1 | 5.0 | 5.0 | na | 1.0 | 0 | 0 | 0 | 0 | na | 5.0 | 5.0 | na | 0 | 0 | 0.5 | 5.0 | 5.0 | na |
| Mf2 | 5.0 | 5.0 | na | 3.8 | 0 | 0 | 0 | 0 | na | 5.0 | 5.0 | na | 0 | 2.6 | 0.8 | 5.0 | 5.0 | na |
| Mf6 | 5.0 | 5.0 | na | 2.8 | 0 | 0 | 0 | 0 | na | 5.0 | 5.0 | na | 0 | 2.4 | 0.7 | 5.0 | 5.0 | na |
| MfGnv14 | 5.0 | 5.0 | na | 0 | 0 | 0 | 0 | 0 | na | 5.0 | 5.0 | na | 0 | 2.0 | 0.9 | 5.0 | 5.0 | na |
| M. arenaria | ||||||||||||||||||
| Ma1 | 5.0 | 5.0 | na | 0 | 0 | 0 | 0 | 0 | na | 5.0 | 5.0 | na | 0 | 5.0 | 6.9 | 5.0 | 5.0 | na |
| Ma2 | 5.0 | 5.0 | na | 0 | 0 | 0 | 0 | 0 | na | 5.0 | 5.0 | na | 1.3 | 5.0 | 4.3 | 5.0 | 5.0 | na |
| Ma3 | 5.0 | 5.0 | na | 0 | 0 | 0 | 0 | 0 | na | 5.0 | 5.0 | na | 0.2 | 5.0 | 9.0 | 5.0 | 5.0 | na |
Notes: aHost plant cultivars used: Solanum lycopersicum cv. Agriset 334 (tomato), Gossypium hirsutum cv. Deltapine 16 (cotton), Arachis hypogaea cv. FL 07 (peanut), Citrullus lanatus cv. Charleston Grey (watermelon), Capsicum annuum cv. California Wonder (pepper), and Nicotiana tabacum cv. NC95 (tobacco). Data represent mean average of duplicate tests, each with three to five replicates. bGalling (GI) and egg mass (EMI) indices were based on a 0 to 5 scale, where 0 = no galls or egg masses, 1 = 1-2, 2 = 3-10, 3 = 11-30, 4 = 31-100, 5 = ≥100 galls or egg masses per plant (Taylor and Sasser, 1978). cReproduction factor (RF) = ratio of nematode eggs at 60 days post inoculation to 3,000 second-stage juveniles initially used as inoculum (Sasser et al., 1984). na=not applicable.