The white grape variety (breeding number Walker 09338-016) is a complex, interspecific new breeding between varieties of the species Vitis vinifera (97%), Vitis rupestris (1.5%) and Vitis arizonica (1.5%). The Vitis vinifera varieties involved were Cabernet Sauvignon (62.5%), Chardonnay (12.5%) and Carignan Noir = Mazuelo (12.5%). The crossing was done in the 1990s by the geneticist Dr. Andrew Walker, professor at the University of California in Davis. Incidentally, Ambulo Blanc was also created from the same varieties. The medium-late ripening vine is extremely resistant to the disease Pierce Disease, which is becoming more common due to climate change. It produces straw-yellow, juicy white wines with floral aromas of melon, lychee, pineapple and green apples. In 2016, no stocks were reported (statistics Kym Anderson).
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