Figure 4.

Principal component analysis (PCA) of different cultivars during ripening. In score plot (A), the number behind the cultivars means the weeks after anthesis. In loading plot (B), 1, delphinidin−3−glucoside. 2, cyanidin−3−glucoside. 3, petunidin−3−glucoside. 4, peonidin−3−glucoside. 5, malvidin−3−glucoside. 6, delphinidin−3−glu acetate. 7, cyanidin−3−glu acetate. 8, petunidin−3−glu acetate. 9, delphinidin−3−glu coumarate. 10, peonidin−3−glu acetate. 11, malvidin−3−glu acetate. 12, cyanidin−3−glu coumarate. 13, malvidin−3−glu caffeate. 14, petunidin−3−glu coumarate. 15, cis−peonidin−3−glu coumarate, 16, cis−malvidin−3−glu coumarate. 17, trans−peonidin−3−glu coumarate. 18, trans−malvidin−3−glu coumarate. 19, reducing sugar. 20, titratable acid. 21, pH value