Summary of nematode-grape rootstock associations:

SOURCES OF INFORMATION:

• McKenry - revised Grape Pest Management Manual
• Ferris - M. arenaria from Ferris & Hunt. 1979. Journal of Nematology 11:168-174. M. incognita personal communication.
• Raski - Raski, Hart, Kasimatis. 1973. Nematodes and their Control in Vineyards. CA Agric. Expt. Station Circular 533.
• Lider - Lider and Goheen. Field resistance to the grapevine fanleaf virus-Xiphinema index complex in interspecific hybrids of vitis.

ABBREVIATIONS:

• I = Immune
• HR = Highly Resistant
• R = Resistant
• O = Some Resistance
• S = Susceptible
• HS = Highly Susceptible
• 1 = low susceptibility
• 2 = intermediate susceptibility
• 3 = high susceptibility

Definitions (from Phytonematology Study Guide, UC DANR Publication 4045):

• Immune plants - do not allow nematode attack, including initial root invasion.
• Resistant plants - may be invaded by nematodes and may show damage, but chemical or physical unsuitability of the plant will prevent population increases.
• Susceptible plants - allow normal nematode reproduction and may or may not tolerate nematode attack.
  • Tolerant plants - are able to withstand nematode attack, whether they are hosts or not.
  • Intolerant plants - are more likely damaged by nematode attack

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