Species: Interspecific Cross (rupestris; vinifera)
Country of origin: France
Breeder: Victor Ganzin
Year released: 1879
Pedigree: V. vinifera 'Aramon' X V. rupestris 'Ganzin'
Berry color: None
AXR #1 was widely used in California during the planting boom of the late 1960s and early 1970s. By the mid 1980s it was failing to phylloxera as it had in France, Italy and South Africa. All populations of phylloxera capable of feeding aggressively on AXR #1 have been termed biotype B. These populations are genetically distinguishible from each other and are likely selected from existing variability. AXR #1's advantages were adaptability, consistent high quality and yields, ease of propagation and relative tolerance to most viruses. However, this rootstock is not phylloxera resistant and should not be planted. Because so much of the coastal acreage was planted with AXR #1 it is imporant to recognize this rootstock. It has folded, slightly lobed leaves, bronze red shoot tips, and a small notch near the petiolar junction with the leaf blade.
Foundation Plant Services at UC Davis is the source of Foundation grapevine material for the nursery industry, and the staff can provide information about possible sources for obtaining this stock.
The National Grape Registry (NGR) contains information about varieties of wine, juice, and table grapes, raisins, and grape rootstocks available in the United States. Growers, nurseries, winemakers and researchers can find background information and source contacts for those grape varieties in this single convenient location.
|Publications||Christensen, L.P. 2003. Rootstock Selection (PDF). Pages 12-15 in: Wine Grape Varieties in California. University of California Agricultural and Natural Resources Publication 3419, Oakland, CA. Buy book|