Table 3.
Number of second-stage juveniles (J2), and young and adult (egg-laying) females of Meloidogyne spp. in roots of oat (Pratex, susceptible; Tachiibuki, resistance) cultivars at early-stage of infection (1, 3, and 5 days after inoculation; DAI) and at 28 DAI in the greenhouse.
| J2 | J2 | J2 | Young female | Adult female | |
|---|---|---|---|---|---|
| Nematode/Cultivar | 1 DAI | 3 DAI | 5 DAI | 28 DAI | 28 DAI |
| M. javanica | |||||
| Pratex | 4.7 a | 15.0 a | 28.1 a | …x | … |
| Tachiibuki | 6.0 a | 14.3 a | 24.3 a | … | … |
| M. incognita race 3 | |||||
| Pratex | 5.6 a | 11.0 a | 23.5 a | 17.4 a | 20.5 a |
| Tachiibuki | 3.6 a | 8.3 a | 18.0 a | 2.3 b | 1.6 b |
| M. arenaria race 1 | |||||
| Pratex | 8.0 a | 15.3 a | 25.3 a | 16.0 a | 12.3 a |
| Tachiibuki | 6.3 a | 14.0 a | 29.1 a | 3.5 b | 2.6 b |
Notes: Each plant was inoculated with 200 second-stage juveniles of each nematode species. Data are the mean of two trials with six replicates. Means followed by the same letter within columns are not significantly different (P = 0.05) based on Tukey’s test. xPratex and Tachiibuki were susceptible to M. javanica and thus not examined at 28 DAI.