PIWI

(viticulture) – is the German abbreviation of the word “pilzwiderstandsfähig”, which means “disease resistant”. PIWI varieties are obtained by special hybridisation between Vitis vinifera, the common European vine, and Vitis species, mainly North American. While hybrid grapes are far from new, PIWIs have attracted attention in recent years due to increased interest and momentum for environmentally sustainable agriculture.