Tempranillo grown to be considered the state's signature grape. In Oregon, the grape was introduced by Earl Jones of Abacela Vineyards and Winery, in the Umpqua Valley AVA. Their climate (hot during the summer day, and cool overnight) seems to be perfect for the Tempranillo grape. In Australia Tempranillo is grown in the McLaren Vale region, and also North East Victoria. Tempranillo has also been introduced by some wine producers in Thailand. The varietal is extensively grown in Argentina, Chile, and Mexico. In Washington state, Tempranillo was one of the varieties pioneered in the state by Red Willow Vineyard in the
Petite mutation be induced using a variety of mutagens, including DNA intercalating agents, as well as chemicals that can interfere with DNA synthesis in growing cells. Mutagens that create Petites are implicated in increased rates of degenerative diseases and in the aging process. A mutation that produces small (petite" > petite) anaerobic-like colonies had shown first in Yeast Saccharomyces cerevisiae and described by Boris Ephrussi and his co-workers in 1949 in Gif-sur-Yvette, France. The cells of petite colonies were smaller than those of wild-type colonies, but the term “petite” refers only to colony size and not the individual cell size. Over 50