Abstract:Prohexadione-calcium (Pro-Ca), originally developed as a plant growth retardant, has recently been discovered it could modify floral color in several ornamental plants like petunia and rose. However, the underlying mechanism of Pro-Ca on the regulation of floral color is still elusive. In this study, a purple-red herbaceous peony (Paeonia lactiflora Pall.) cultivar with control and Pro-Ca treatment was used as the material. Their color indices were measured, flavonoid compositions and contents as well as its b… Show more
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