Rootstocks

Here is the list of rootstock varieties available to our customers for grafted plants or rootings, as well as some basic information about each one. Most of the rootstocks we propose come directly or are crossbreeds from the three main North American Vitis species: Vitis Riparia, Vitis Rupestris, Vitis Berlianderi. Thanks to this wide range of varieties, our plants can adapt to any climate and soil conditions.

Riparia Gloire de Montpellier

• Genealogy: Vitis Riparia
• Low vigor with a rather shallow rooting depth, very good in fertile soils
• Short vegetative cycle with very good maturity of grapes
• Very low lime tolerance (maximal active lime tolerance level: 6%)
• Available clones: 4 (UCD-FPS), 6 (NWGFS)

Rupestris St. George

• Genealogy: Vitis Rupestris
• High vigor
• High Philloxera resistance
• Medium to high salinity tolerance
• Latent virus tolerant
• Good in deep soils
• Available clones: 19 (UCD-FPS)

101-14

• Genealogy: Vitis Riparia x Vitis Rupestris
• Similar agronomic aptitudes as Riparia Gloire de Montpellier with slightly higher vigor
• Grows well in the wet soils but cannot bear drought conditions
• Maximal active lime tolerance level: 9%
• Available clones: 1 (UCD-FPS), 5 (UCD-FPS, Guillaume Proprietary Selection)

3309C

• Genealogy: Vitis Riparia x Vitis Rupestris
• Medium vigor
• Good behavior in deep soils that are not too wet, but not too dry
• Gives very good maturities and is still a reference to make great wines
• Maximal active lime tolerance level: 11%
• Available clones: 2 (UCD-FPS), 5 (UCD-FPS)

Schwarzmann

• Genealogy: Vitis Riparia x Vitis Rupestris
• Available clones: 1 (UCD-FPS), 1 (NWGFS)

161-49

• Genealogy: Vitis Riparia x Vitis Berlianderi
• Low vigor
• Good earliness
• Gives good products in lime clay and well drained soils
• Does not like wet conditions
• Good lime resistance (maximal active lime tolerance level: 25%)

420A

• Genealogy: Vitis Riparia x Vitis Berlianderi
• Named "Riparia of the lime soils" because of its very low vigor and its earliness
• Like Riparia Gloire, gives very good products in rather fertile soils
• Maximal active lime tolerance level: 20%
• Available clones: 4 (UCD-FPS), 7 (UCD-FPS, Guillaume Proprietary Selection)

5C

• Genealogy: Vitis Riparia x Vitis Berlianderi
• Vigorous and early
• Well adapted to meager soils or to rather tardy situations
• Maximal active lime tolerance level: 20%
• Available clones: 8 (UCD-FPS)

5BB

• Genealogy: Vitis Riparia x Vitis Berlianderi
• High vigor
• Good in meager and wet soils
• Very well adapted to replace the dead vine-stock in old vineyards
• Maximal active lime tolerance level: 20%
• Available clones: 6 (UCD-FPS), 6 (NWGFS)

SO4

• Genealogy: Vitis Riparia x Vitis Berlianderi
• Early and rather vigorous
• Fructiferous rootstock which gives good product in many kinds of situations
• Best results in not too fertile or wet soils
• Maximal active lime tolerance level: 18%
• Available clones: 9 (UCD-FPS), 9 (NWGFS)

110R

• Genealogy: Vitis Rupestris x Vitis Berlianderi
• Very good drought resistance
• Rather fructiferous
• Medium to high vigor
• Doesn't like excess water in the spring
• Maximal active lime tolerance level: 17%
• Available clones: 1 (UCD-FPS), 4 (UCD-FPS, Guillaume Proprietary Selection)

140R

• Genealogy: Vitis Rupestris x Vitis Berlianderi
• Very high vigor
• Drought tolerant
• Very robust rootstock, particularly well adjusted to dry, meager and shallow soils
• Good lime resistance (maximal active lime tolerance level: 24%)
• Available clones: 1 (UCD-FPS), 2 (UCD-FPS)

1103P

• Genealogy: Vitis Rupestris x Vitis Berlianderi
• High vigor
• Does well in both drought and excess water conditions
• Good salt tolerance
• Maximal active lime tolerance level: 18%
• Available clones: 1 (UCD-FPS), 2 (UCD-FPS), 6 (UCD-FPS, Guillaume Proprietary Selection)

16-16C

• Genealogy: Vitis Riparia x Vitis Solonis
• Low vigor
• Low drought tolerance
• High phylloxera and wet soil tolerance
• Best on fertile, medium to fine textured soils
• Available clones: 2 (UCD-FPS)

039-16

• Genealogy: Vitis Vinifera x Vitis Rotundifolia
• High Philloxera resistance
• Does poorly on coarse, sandy soils due to low root knot nematode tolerance
• Tolerance to Fanleaf virus
• Available clones: 1 (UCD-FPS)

GRN 1 - 2 - 3 - 4 - 5

• Genealogy: UC Davis Rootstock
• Available clones: 1 (UCD-FPS)

21208 State Route 113, 95645 Knights Landing, California

Tel: (530)-735-6821

Fax: (530)-735-6822

info@guillaumenurseries.com