The white grape variety (also Elmer Swenson 7-4-76, ES 7-4-76) is a complex interspecific new breed between Kay Gray x Elmer Swenson 2-12-13 (ES 5-14 x Swenson Red ). They are genes of Vitis aestivalis. Vitis berlandieri. Vitis cinerea. Vitis labrusca. Vitis riparia. Vitis rupestris and Vitis vinifera contain. The crossing took place in 1983 in the USA by the breeder Elmer Swenson (1913-2004) at the University of Minnesota, The late-ripening vine is resistant to frost but vulnerable to Botrytis and especially black rot, It produces wines with aromas of tropical fruits and possibly Foxton, The variety is in the US States Iowa. Minnesota, Nebraska, New Hampshire, new York and South Dakota grown and also as table grape used. In 2010, a total of 12 hectares of vineyards were designated in the US (Kym Anderson ).
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012