Berry temperature and solar radiation alter anthocyanin populations in Merlot
In a paper that earned them the "2009 Best Paper in Viticulture" award from the American Society for Enology and Viticulture, these researchers from USDA-Agricultural Research Service and North Carolina State University modified the environment of berries to learn about the separate effects of light and temperature on anthocyanin biosynthesis.
Find the full paper at: http://ajevonline.org/cgi/reprint/59/3/235
172 berry temperature, solar radiation, and anthocyanins .pdf