Effects of Shading on Net Photosynthetic Rate and Chlorophyll Fluorescence Parameters in Leaves of Prunus serrulata Libdl.'Royal Burgundy'
Wu Chong
Zhang Xiaomin
Yin Yanlei
Feng Lijuan
Yang Xuemei
Wang Fei
Abstract：Using annual Prunus serrulata seedlings as materials,the pigment content,net photosynthetic rate and chlorophyll fluorescence parameters of leaves were investigated under different shading treatments (0,24％,50％ and 85％).The results showed that with the increase of shading efficiency,the contents of chlorophyll a and b in leaves increased,while the chlorophyll a/b reduced.The content of carotenoids changed little,and that of anthocyanins decreased.The net photosynthetic rate (Pn),minimal fluorescence (Fo),maximum fluorescence (Fm),variable fluorescence (Fv),maximal photochemical efficiency of PS Ⅱ (Fv/Fm),latent reactivity of PS Ⅱ (Fv/Fo) and photochemical quenching coefficient (qP) enhanced,but the non-photochemical quenching coefficient (qN) decreased as the shading efficiency increasing.The diurnal variation of net photosynthetic rate presented bimodal curve under no shading treatment,while showed unimodal curve under 24％,50％ and 85％ shading treatments.Shading reduced the content of anthocyanins in Prunus serrulata Libdl.'Royal Burgundy'leaves,so it should avoid shading as a garden foliage plant.
Keywords：Prunus serrulata Libdl.'Royal Burgundy'ShadingPhotosynthetic characteristicChlorophyll fluorescence
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 48-53 )