Although the grape variety originates from the USA, it is a species of Vitis vinifera. Nothing is known about its origin. Synonyms are Emperador, Genova, Genova Rosa, Red Emperador and Red Emperor. The versatile, red-berried vine is used as a wine grape, table grape and for sultanas. In California, it was still one of the most important table grapes until the 1980s, with 7,000 hectares under vine. However, the stock has shrunk to 300 hectares because it has been replaced by the Red Globe variety. It is particularly well suited to very warm regions and is also grown in Australia, Brazil, Chile, Mexico and South Africa. The variety was a crossing partner of the new varieties Blush Seedless, Centennial Se edless, Christmas Rose, Crimson Seedless, Emerald Seedless, Red Globe and Ruby Seedless. A seedless mutation is called Emperor Seedless. No stocks were reported under the name Emperor in 2016 (Kym Anderson).
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