The red variety (also GM 6494-5) is a new breed between Zarya Severa x St. Laurent, Synonyms are Ambros Rot, Geisenheim 6494-5 and GM 6494-5. They are genes of Vitis amurensis and Vitis vinifera contain. Although it is clearly from a botanical point of view hybrid but it is not considered as such. These are strictly prohibited within the EU for quality wines and land wines. On behalf of the European Commission, a study was carried out in 2003 to establish criteria for the assessment of "hybrids or non-hybrids". The variety was performed alongside some others in Germany new varieties with Amurensis genes classified as "non-hybrids" (see under hybrids ).
The basic cross of the underlying variety was already in 1964 by the breeder Vilém crinkly (1924-2013) in the former Czechoslovakia. This breeder later offered Helmut Becker (1927-1990) in Geisenheim some seed cores that recognized the importance of the breeding material. From this time as GM 6494 seedling population was selected based on its performance of the seedling 6494-5 and later propagated under the variety name Rondo as a separate grape variety. Of the variety protection was granted in 1997. Incidentally, the variety was also a crossbred partner in the new varieties Allegro and prior,
The very early ripening vine has a high resistance to wintry frost and wrong mildew, but is prone to powdery mildew. It produces deep dark, ruby red wines with the raspberry and cherry aromas similar to Merlot, which are also excellent teinturier (Color enhancers) are suitable. The vine occupies in Germany mostly in the growing area Rheinhessen ten hectares of vineyards. Other stocks are also available in England (40 ha) and Romania (1 ha). In 2010, a total of 50 hectares of vineyards were reported.
Pictures: Ursula Bruehl, Doris Schneider, Julius Kühn Institute (JKI)