Additional file 1: of Auxin controls circadian flower opening and closure in the waterlily

The intermediate petal segment determines the flower opening and closure rhythm.Corresponding to Fig. 1. (A) The opening and closure rhythm of Nymphaea colorata Peter’s flower was tracked from 7:30 to 18:00. (B) Without the sepal, the floral opening-closure movement was tracked when only 0.5 cm of the petal was left. White arrows highlighted the petal movement. (C) Measurement methods of floral opening angles. Scale bar, 25 mm (A-C). (TIF 6190 kb)