| Crop: | "Resistant" to: |
| Alfalfa (Lahonton) | Ditylenchus dipsaci |
| Bean, Lima (Ventura N) | Meloidogyne incognita |
| Bean, Baby Lima | Meloidogyne incognita |
| Bean, Blackeye | Meloidogyne incognita |
| Citrus rootstocks (Troyer) | Tylenchulus semipenetrans |
| Dichondra (Southern Selections) | Meloidogyne incognita |
| Grape rootstocks (various) | Meloidogyne, Pratylenchus & Xiphinema |
| Peach rootstock (Nemaguard) | M. incognita & M. javanica |
| Sweet Potato (various) | M. incognita |
| Tomato (VFN lines) | M. incognita, M. javanica, M. arenaria |
This table provides some examples of "resistant" varieties utilized in various cropping situations in California.
Typically, with crops such as alfalfa or grapes for which several genera of nematodes are listed, any particular variety will only be "resistant" to a single genus of nematodes.
Nematode resistant tomatoes are only resistant to 3 of the 4 major species found in tomato growing areas of California. They are not resistant to M. hapla.
At the present time, breeding programs to develop additional nematode resistant (or tolerant) varieties for carrots, beans, tomatoes, wheat, grapes, and fruit and nut trees.
It is also important to note that although Nemaguard rootstock is resistant to root-knot nematode, it has been shown to be more susceptible to damage from ring nematode than other rootstocks such as Lovell.