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Grape Variety: Trousseau gris

Variety Name Trousseau gris
TTB Approved Name(s) Trousseau gris
Common Synonyms Gray Riesling
All Synonyms Chauche gris, Gray Riesling, Grey Riesling, Gris de Salces, Terret d'Afrique
Countries of Origin France
Species Vitis vinifera
Pedigree Mutation of Trousseau
References
Berry Color Grey
Uses Wine
Comments Trousseau gris is a light-colored mutation of Trousseau, which has black fruit. For many years, Trousseau gris was incorrectly referred to in California as Grey Riesling. Trousseau gris was once significant in the Charante region of France.

Trousseau gris PhotosClick photo to enlarge

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Trousseau gris Selections

Information about:          Selection Numbers     |     Registration Status
  Trousseau gris 01
Registration Status Registered Registered is the ultimate status in the California Department of Food & Agricultures Grapevine Registration & Certification Program. Registered selections have successfully completed all disease testing required by the regulations. Registered selections have also been confirmed as true to variety by experts using visual observations, DNA-based testing or both.
Source Gray Riesling FPS 01, from a California vineyard (Barra)
Treatments None , Tissue Culture Excision
Comments The name was changed in 2003 from Gray Riesling FPS 01 to Trousseau gris 01; TTB phased out the name Gray Riesling.

  Trousseau gris 02
Registration Status Registered Registered is the ultimate status in the California Department of Food & Agricultures Grapevine Registration & Certification Program. Registered selections have successfully completed all disease testing required by the regulations. Registered selections have also been confirmed as true to variety by experts using visual observations, DNA-based testing or both.
Source Gray Riesling FPS 02, from a California vineyard (Cella)
Treatments None , Tissue Culture Excision
Comments The name was changed in 2003 from Gray Riesling FPS 02 to Trousseau gris 02; TTB phased out the name Gray Riesling.

  Trousseau gris 02.1
Registration Status Provisional Provisional Status is an important term used in the regulations of the California Department of Food & Agriculture's Grapevine Registration & Certification Program. Grapevine selections with Provisional Status have successfully completed all required disease testing, but have not been confirmed as true to variety. Propagation material from Provisional selections qualifies for release subject to the understanding on the part of the customer that the identity has yet to be confirmed.
Protocol 2010 Qualifies for Protocol 2010.
Treatments Tissue Culture Excision
  Trousseau gris 03
Registration Status Registered Registered is the ultimate status in the California Department of Food & Agricultures Grapevine Registration & Certification Program. Registered selections have successfully completed all disease testing required by the regulations. Registered selections have also been confirmed as true to variety by experts using visual observations, DNA-based testing or both.
Source Trousseau gris (formerly Gray Riesling) FPS 02, which was from a California vineyard (Cella)
Treatments Heat treatment 43 days
Comments The name was changed from Gray Riesling FPS 03 to Trousseau gris FPS 03 in 2003; TTB phased out the name Gray Riesling.

  Trousseau gris 07 Top
Registration Status Registered Registered is the ultimate status in the California Department of Food & Agricultures Grapevine Registration & Certification Program. Registered selections have successfully completed all disease testing required by the regulations. Registered selections have also been confirmed as true to variety by experts using visual observations, DNA-based testing or both.
Source Former UC Foothill Experiment Station in Jackson, California
Treatments None
Comments This selection came to Foundation Plant Services in 1965 from University of California's former Foothill Experiment Station in Jackson, Amador County, California. The plant material was at location K8v6 at the station under the name(s) Johannisberger Riesling or Chauche gris. It originally came from the former experiment station at Berkeley in 1889 and was planted in that year at the Foothill Station. When the plant material arrived at FPS in 1965, it was given the name Grey Riesling FPS 07. The name was changed from Gray Rielsing FPS 07 to Trousseau gris FPS 07 in 2003. DNA tests conducted at FPS showed that this selection matched references for Trousseau gris, not for Riesling.