Total skin anthocyanin (TSA) concentrations and proportion of total anthocyanins (italics) grouped by anthocyanidin, acylation, and branch of the phenylpropanoid biosynthetic pathway in berry skins from Merlot across three seasons for 10 temperature-solar radiation regimens. Total skin anthocyanin (TSA) concentrations and proportion of total anthocyanins (italics) grouped by anthocyanidin, acylation, and branch of the phenylpropanoid biosynthetic pathway in berry skins from Merlot across three seasons for 10 temperature-solar radiation regimens. Julie M. Tarara et al. Am J Enol Vitic. 2008;59:235-247 Copyright © 2008 by the American Society for Enology and Viticulture