Plant resistance to root knot nematode (RKN)
During 2010-2011, a survey of RKN was conducted in the south west of Western Australia in carrot and potato paddocks. Resistance to RKN species has been determined for various crops (Table 1).
Table 1 Resistance ratings1 in glasshouse trials of a range of crops to root-knot nematode (RKN) species found in Western Australia. Entries in bold indicate resistance of the tested cultivar to the listed RKN species.
| Plant | Cultivar | M. hapla | M. incognita | M. javanica | M. fallax |
|---|---|---|---|---|---|
| Broccoli | Aurora | SS/SS2 | R/HR | MS/MS | |
| Broccoli | Bridge | R/MS | R/HR | MS/MS | |
| Carrot | Mojo | HS | MS | HS | |
| Carrot | Stefano | HS/HS | MS/SS | HS/MS | |
| Cauliflower | Boris | MS/SS | R/R | HS/HS | |
| Cauliflower | Virgin | SS/MS | R/HR | MS/HS | |
| Onion | Mercedes | MS | HS/SS | MS/HS | |
| Field pea | Dunwa | SS | SS | HS/MS | |
| Forage brassica | Leafmore | R | |||
| Forage brassica | Pasja | SS | |||
| Lucerne | SARDI 10 II | SS | |||
| Lucerne | Venus | MS | |||
| Lupin | Mandelup | SS | |||
| Millet | Japanese | HS | MS | MS/HS | HS |
| Millet | Nutrifeed | SS | MS | SS/MS | HR/HR |
| Mustard | Caliente | SS | |||
| Mustard | Yellow | MS/R | MS/R | HS/MS | |
| Barley | Hindmarsh | HS | |||
| Wheat | Mace | HS | |||
| Oats | Saia | R | HR | SS/R | MS |
| Oats | Swan | HR | HR | R/R | MS |
| Rhodes grass | Katambora | R | SS | SS/SS | SS |
| Rhodes grass | Nemkat | R | HR | R/R | SS |
| Ryegrass | Concord | SS | SS | MS/MS | MS |
| Ryegrass | Crusader | R | HR | SS/SS | |
| Ryegrass | Dargo | R | R | SS | MS |
| Ryegrass | Arnie | HS | |||
| Ryegrass | Vortex | HS | |||
| Serradella | Cadiz | R | |||
| Sorghum | Jumbo | R | HR | R/SS | SS/SS |
| Sorghum | Superdan II | HR | HR | R/R | R |
| Balansa clover | Paradana | MS | R | HS/MS | |
| Biserulla | Casbah | MS | |||
| Persian clover | Prolific | MS | |||
| Subclover | Gosse | MS | |||
| Subclover | Trikkala | HS | SS | HS/HS | HS |
| White clover | Haifa | MS | |||
| Tomato | Tiny Tim | HS | HS/MS | HS/HS | HS/HS |
1Multiplication rate (mr) is final egg count/initial number of eggs inoculated. HR=highly resistant, R=resistant, SS=slightly susceptible, MS=moderately susceptible, HS=highly susceptible.
2Double entries show results for two experiments. In some cases resistance ratings differ slightly between experiments.