New insight into the genetics of color in grape

Abstract

Grapes may either be white or colored, ranging from the lightest pink to the darkest purple tone depending on the quantity and composition of anthocyanins accumulated in the berry skin. QTL mapping on cross-derived progeny and association mapping on natural diversity were combined to decipher the genetic architecture of anthocyanin content and composition in berry skin, a crucial trait for both wine quality and human nutrition. For the total anthocyanin content in the skin of mature berries on a segregating population of 191 progenies, we identified 2 QTLs accounting for 62% and 7.1% of the total variation. Further studying candidate genes from these QTL intervals on a core collection of nat..