Petal Morphology Is Correlated with Floral Longevity in Paeonia suffruticosa

Floral longevity (FL) is an important floral functional trait which critical for flowering plants. FL shows great diversity among angiosperms; however, there limited information on the mechanisms that influence differences in longevity, especially relationship between petal anatomical traits and longevity. We aimed to examine (1) relationships tree peony cultivars (2) characteristics of longer cultivars. Eleven six with different were investigated, including water conservation (petal thickness, cuticle number cell layers, mesophyll adaxial epidermis thickness abaxial thickness), three supply (vein density, xlylem vessels xylem vessel diameter), fresh mass dry across There are significant related ability peonies FL. Tree long characterized by thicker Mesophyll, cuticles, petals. was a positive correlation diameter. These results suggest retain flowers associated Petal supply, vein densities, beneficial prolonging flower peonies.