Fig. 5

Relative levels of anthocyanin in S5 flowers of the differently treated plants. Anthocyanin was measured in flowers at the first day of S5. Data shown are mean values ± standard deviation bars from three independent experiments each containing five plants and 15 flowers. Different letters in bar graphs indicate significant differences between treatments within the corresponding periods based on analysis of variance along with Fisher’s least significant difference test and Tukey–Kramer’s test (n = 3 experiments; P < 0.01)