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Kerner

The white grape variety is a new variety between Schiava Grossa (Trollinger) x Riesling, which was last confirmed by DNA analyses carried out in 2018. Synonyms are Herold Triumpf, Kerner Bijeli, Kernerrebe, Trollinger x Riesling Renano S 25/30, Weinsberg S 25 and (first name) Weißer Herold. The cross was made in 1929 at the State Teaching and Research Centre in Weinsberg (Württemberg) by the breeder August Herold (1902-1973). Plant variety protection was granted in 1969. The name was given after the Swabian doctor and wine writer Justinus Kerner (1786-1862), who lived in Weinsberg. Incidentally, Rotberger and Witberger also originated from the same parents. Kerner was a crossing partner of the new varieties Juwel, Roter Milan and Silcher. One mutation is Kernling, which is characterised by fewer stingy shoots.

Kerner - Weintraube und Blatt

The medium to late ripening vine is susceptible to powdery mildew and is prone to the so-called Kerner disease, but is resistant to frost. It produces Riesling-like white wines with a slight hint of candy and flavours of orange peel as well as good quality potential. Due to its special aromatic characteristics, it is also known as a bouquet variety. The area under cultivation in Germany in 2018 totalled 2,463 hectares with a strong downward trend. There are also other stocks in Australia (0.2 ha), England, Japan (76 ha), Italy (16 ha), California, Canada (11 ha), Austria, Romania (3 ha), Switzerland (25 ha), Slovenia (111 ha), South Africa (1 ha), the Czech Republic (72 ha) and Hungary (2 ha). A total of 2,891 hectares were designated in 2016. This puts the variety in 148th place in the global grape variety ranking (Kym Anderson).

Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Images: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)

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