Fig. 2

Chl content in petals and leaves of chrysanthemums. a Photographs of flowers of FW (Feeling White), FG (Feeling Green), and FGD (Feeling Green Dark) and an FG leaf (L). Flower development was divided into three stages: S1, 2–3 days after calyx opening; S2, ray florets at the outermost part of the capitulum begin to open; and S3, approximately 90% of ray florets are open. b Chl content in petals at different developmental stages and in mature leaves. Mean values (± SD) of three biological replicates are shown. The differences among petals (FW, FG, and FGD) were analyzed by Tukey–Kramer multiple-comparison test. Different letters indicate significant differences at P < 0.05