Fig. 5: Expression analysis of selected transcription factor (TF) genes and structural genes at five blooming stages in the petals of “High Noon” and “Roufurong”.

a Expression patterns of selected genes at five blooming stages in the petals of “High Noon” and “Roufurong”. b An interaction network between selected genes and flavonoids. Red represents TF genes, blue represents structural genes, and yellow represents flavonoids. The solid line represents a positive correlation and the dashed line represents a negative correlation. A larger circle and more nodes represent a stronger correlation