The red variety is a new breed between Madeleine Angevine x Teinturier ( Teinturier du Cher ) published in 2012 DNA analysis, The parenting provided by the breeder Blue Portuguese x Teinturier turned out to be wrong. Synonyms are Froelich V 4-4, color grape Froelich and purple. The crossing was done by the private breeder Gustav Adolf Froelich (1847-1912). For many decades, the variety was ignored and was used as "Froelich V 4-4" in breeding establishments.
In the 1930s she was in the research institute Geisenheim edited ampelographisch and received from Dr. med. Helmut Becker (1927-1990) the name Dunkelfelder, with which he alluded to the unknown origin and the dark wine color. The variety protection was granted in 1980. The vine is sensitive to frost, Dryness and wrong mildew, It produces deep dark colored red wines, so it is very good as teinturier (Teinturier). In 2009 she finished in Germany 341 hectares with falling tendency. Small stocks existed in 2010 in the Switzerland (24 ha), England (2 ha) and Canada (Statistics Kym Anderson ).
Pictures: Ursula Bruehl, Doris Schneider, Julius Kühn Institute (JKI)