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Ravat blanc is a white hybrid grape variety that is a crossing of Chardonnay and a Seibel grape. While the Vitis International Variety Catalogue (VIVC) maintained by the Geilweilerhof Institute for Grape Breeding list Seibel 5474 as the second parent,〔Vitis International Variety Catalogue (VIVC) ''(Ravat blanc )'' Accessed: April 30th, 2013〕 Master of Wine Jancis Robinson notes that other authors list Seibel 8724 as the parent.〔J. Robinson, J. Harding and J. Vouillamoz ''Wine Grapes - A complete guide to 1,368 vine varieties, including their origins and flavours'' pgs 874-875 Allen Lane 2012 ISBN 978-1-846-14446-2〕 The grape is often confused with the white hybrid grape Vignoles that is often called just Ravat (or officially Ravat 51).〔Appellation America ''"(Vignoles/Ravat )"'' Grape profiles. Accessed: April 30th, 2013〕 Created in the 1930s by French grape breeder J.F. Ravat, there were over 600 hectares (1,483 acres) of the grape planted in France in 1958. Today, the grape is more likely to be found in the United States where producers in the Finger Lakes AVA of New York use to it make sweet wines.〔 ==History and pedigree== Ravat blanc was created in the 1930s by J.F. Ravat in the commune of Marcigny in the Saône-et-Loire department of eastern France that includes the Burgundy wine region. Ravat crossed the ''Vitis vinifera'' Chardonnay grape with a hybrid Seibel grape (either Seibel 5474 or Seibel 8724) created by the French viticulturist Albert Seibel. This lineage makes Ravat blanc a "complex" hybrid in that its pedigree includes genes from several ''Vitis'' species.〔 Seibel 5474 (the parent vine recognized by the VIVC〔) is itself a complex hybrid crossing of Seibel 405 and Seibel 867.〔Vitis International Variety Catalogue (VIVC) ''(Seibel 5474 )'' Accessed: April 30th, 2013〕 In Seibel 405's lineage are vines from the ''Vitis rupestris'' and ''Vitis aestivalis'' species while Seibel 867 is a crossing of two other complex hybrids Noah (with has ''Vitis riparia'' and ''Vitis labrusca'' in its lineage) and Vivarais (also known as Seibel 2003 which is a crossing of Munson and Herbmont d'Aurelles).〔Vitis International Variety Catalogue (VIVC) ''(Seibel 867 )'' Accessed: April 30th, 2013〕 The grape was widely planted after its release with more than 600 hectares (1,483 acres) of the variety reported in France in 1958. But the low quality of the grape's wine, the vine's low fertility and its susceptibility to a number of viticultural hazards (including powdery mildew) lead to a sharp drop in plantings and by 2008 there was 7 hectares (17 acres) of the grape left in France.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ravat blanc」の詳細全文を読む スポンサード リンク
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