Fig. 1

Anthocyanin accumulation in petals of chrysanthemum ‘Arctic Queen’ induced floral coloration at post-flowering stages. Bars = 1 cm. A Variation of floral color at the post-flowering stage. S1 (white), S2 (slightly red), S3 (obvious red). B CIEL*a*b* color parameters of petals at three flowering stages. Error bars indicate SD of five biological replicates. C Anthocyanin extraction from petals at three flowering stages. D The total anthocyanin content (TA) in petals at three flowering stages. Error bars indicate SD of three biological replicates. Different lowercase letters in B and D indicate significant differences (p < 0.05, ANOVA, Tukey’s correction)