Tempranillo Douro it is known as Tinta Roriz and mainly used in blends to make port wine. Tempranillo arrived in California bearing the name Valdepeñas, and it was grown in the Central Valley at the turn of the 20th century. Since the climate of the Central Valley was not ideal for the grape, it was used as a blending grape for jug wine. California has since started to use it for fine wines. In Texas, the soils of the High Plains and Hill Country have been compared to those of northern Spain. Tempranillo has been well received in Texas and has
Petite mutation Petite mutation petite (ρ–) is a mutant first discovered in the yeast "Saccharomyces cerevisiae". Due to the defect in the respiratory chain, 'petite' yeast are unable to grow on media containing only non-fermentable carbon sources (such as glycerol or ethanol) and form small colonies when grown in the presence of fermentable carbon sources (such as glucose). The petite phenotype can be caused by the absence of, or mutations in, mitochondrial DNA (termed "cytoplasmic Petites"), or by mutations in nuclear-encoded genes involved in oxidative phosphorylation. A neutral petite produces all wild type progeny when crossed with wild type. petite mutations can