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Flavonoid accumulation during flower petal development. (A) Phenotypes of different developmental stages of petals of Paeonia ‘He Xie’. (B) Total flavonoid content from stage 1 to stage 5 in petals by HPLC-DAD analysis (mean ±SD; n=3). TA, total anthocyanin content, mg of Cy3G/100 mg dry weight (DW) of petals; TF, total flavone and flavanol content, mg of rutin/100 mg DW of petals. (This figure is available in color at JXB online.)
