Analysis of Physiological and Biochemical Factors Affecting Flower Color of Herbaceous Peony in Different Flowering Periods

Herbaceous peony (Paeonia lactiflora Pall.) is a famous ornamental plant, and the study of its flower color great significance for cultivating new varieties. To explore factors driving formation change herbaceous color, we selected five varieties at four flowering stages to determine in petal area, microstructure. We also examined composition content pigments, soluble sugar protein content, pH value cell fluid, water content. Finally, analyzed correlations between each factor. found that Pn3G5G, Pg3G5G, Cy3G5G were main anthocyanin components red purple petals. Qu3G, Qu7G, Is3G, lutein play important roles yellow formation. The during process directly caused by changes carotenoid In addition, other physiological indices influence color. This explored biochemical affecting petals, which has an practical studying mechanism breeding flowers.