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The red grape variety (also Grana d'Oro) originates from the USA. According to DNA analyses carried out in 2009, there are close genetic links to the Concord, Isabella and Niagara varieties, but the origin is unknown. Possibly there are relations to the hybrids Ives and York-Madeira (both with synonym Bordo), but DNA analyses are pending (as of 2013). The high-yielding vine is extremely resistant to anthracnose. It produces dark red wines. The variety is also used for the production of grape juice. It is cultivated on a large scale in Brazil in the Rio Grande do Sul region. In 2010, a total of 8,287 hectares of vineyards were planted here. This is two and a half times as much as in 2000, when the area was 3,379 hectares. This puts it in 81st place in the worldwide grape variety ranking.

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