Emerald Riesling

The white grape variety is a new breeding between Malvasia Aromatica di Parma (Muscadelle du Bordelais) x Garnacha according to DNA analyses carried out in 2013. The parentage Muscadelle x Riesling given in the breeding list turned out to be false. This also clarified the identity of the variety known as Muscadelle (Muscadelle of California or Muscadelle du Bordelais), which should not be confused with the French Muscadelle (Muscadelle de Bordelais). Synonyms are California 1139 E 29, Emerald Rizling, Esmerald Riesling, Riesling Izumrudnii and Rizling Izumrudnii. The cross was made in 1936 by Dr. Harold P. Olmo (1909-2006) at the University of California. The high-yielding vine is particularly suitable for warm coastal regions. It produces fine-acid white wines that are mainly used for blends. The variety was widespread in California 's San Joaquin Valley until the 1970s, and today it is cultivated on 21 hectares in the USA. There are further stocks in Israel with 110 hectares and in South Africa with 47 hectares. In 2016, a total of 178 hectares of vines were reported, with a strong downward trend (Kym Anderson statistics).

Emerald Riesling - Weintraube und Blatt

Pictures: Ursula Brühl, Doris Schneider, Julius Kühn-Institut (JKI)

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Emerald Riesling

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