Abstract
The relationship between the flower color and flavonoid composition of petals was investigated in 10 cultivars of Impatiens walleriana. Thirteen known anthocyanins, and a new anthocyanin (peonidin 3-O-[6-O-(trans-p-coumaroyl)-glucoside]-5-O-[6-O-(acetyl)-glucoside]) were identified from the flowers of Impatiens walleriana along with two known flavonol glycosides. Regarding the flower color from orange-red to purple, decreases in the hue values (b*/a*) of these cyanic petal colors were generally responsible for the acylation of anthocyanin with p-coumaric acid, decreasing total anthocyanins, and also methoxylation of the B-ring in anthocyanins.
