The white grape variety is an interspecific new variety between Eger 2(Villard Blanc) x Bouvier. Synonyms are Biahka, Bianka, EC 40, ECS 40, Egri Csillagok 40 and May Red. Genes of Vitis berlandieri, Vitis rupestris and Vitis vinifera are included. The hybrid was crossed in Hungary in 1963 by the breeders Jozsef Csizmazia and Laszlo Bereznai. The plant variety protection was granted in 1978. The variety was a crossing partner of the four new varieties Backa, Cabernet Volos, Rubinka and Sauvignon Rytos.
The early-ripening, high-yielding, frost-hardy vine is generally well resistant to fungal diseases. It produces flowery, neutral white wines with moderate alcohol content. The variety is widely dispersed in Hungary, but is mainly grown in the Kunság area in the centre, occupying a total of 2,922 hectares of vineyards. Other stocks are found in Russia (3,513 ha), Moldova (15 ha) and Romania (12 ha). In 2010, the variety occupied a total of 6,462 hectares of vineyard area with a strong upward trend (in 2000 it was 2,180 hectares). Bianca is also a synonym for the Italian variety San Lunardo and occupies 96th place in the worldwide grape variety ranking.
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Pictures: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)