Jacquez
The Jacquez is the Cépage Hybride of American Raisin of origin Vitis aestivalis which was multiplied the most in the World.
Used a long time as direct producer, it was also used like Porte-greffe in the South of France for the needs for the rebuilding of the Vignoble after the crisis of the Phylloxéra in 1873 because of its great resistance to the diseases (Oïdium, Mildiou) and will phylloxéra: some of these Vigne S grafted on Jacquez exist still today.
In France, it is a type of vine prohibited since 1935 like are the five different same group: the clinton, the Herbemont, the Isabelle, the noah and the othello, which would contain substances Cancérogène S.
The majority of these hybrid type of vines were officially prohibited for medical reasons. Indeed, the rate of Méthanol of the Vin resulting from some of these type of vines would be rather high. However, one does not find this problem for the majority of the hybrids such as for example for Noah and Jacquez. In addition, only the Fermentation of the Grape juice can produce methanol, one can thus eat the grape or drink the juice without risk more especially as the rate of Resvératrol (substance anticancerigene) is more present in some of these type of vines (Jacquez) that in Vitis will vinifera not hybrids.
Prohibition would result rather from politico-economic reasons.
Jacquez is known under the names alabama, black El Paso, black July, black Spanish, blue French, burgundy, Cigar Box Bunch, Clarence, Deveraux, French Grape, Jacques, Jacquet, Jaquez, July Sherry, Lenoir, Long Laliman, Longworth´s Ohio, Maccandless, Ohio, Sherry off the South, Sumpter, Thurmond, Tintiglia, Warren und Zsake
External bond
bond: http://www.vigneantan.com/fr/
Biography
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Pierre Roller: encyclopedic Dictionary from the Type of vines , Hachette Livre, 1. edition 2000. ISBN 2-01-23633-18
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