滨海沙地簕竹属10个竹种叶绿素荧光特性研究

通过利用叶绿素荧光测定技术测定滨海沙地簕竹属10个竹种的叶绿素荧光参数试验研究,结果表明:(1)鼓节竹、观音竹、凤尾竹的初始荧光(Fo)、可变荧光(Fv)、最大荧光(Fm)值较高于其它竹种;(2)河边竹、观音竹、青皮竹、青竿竹的PSⅡ最大光化学效率(Fv/Fm)、PSⅡ的潜在活性(Fv/Fo)、PSⅡ实际光化学效率(QY)、PSⅡ电子传递量子产率(ΦPSⅡ)等值均高于其它竹种;(3)河边竹、花孝顺竹、破蔑黄竹、青竿竹的光化学猝灭系数(Qp)相对较高;(4)河边竹、青皮竹、青竿竹、鼓节竹的非光化学猝灭系数(NPQ)值相对较低。综上可以看出簕竹属中河边竹、观音竹、青皮竹、青竿竹具有较好的光合生理功能,可作为沿海沙地竹子引种的优选竹种。

Chlorophyll Fluorescence Characteristic of Ten Bamboo Species of Bambusa in Coastal Sandy Area

Chlorophyll fluorescence parameters of ten bamboo species of Bambusa in the coastal sandy area,i.e.B.tuldoides Munro,B.multiplex cv.Fernleaf,B.mutiplex var.riviereorum R.Maire,B.tuldoides cv.Swolleninternode,B.contracta,B.textilis,B.multiplex var.strigosa,B.ventricosa,B.multiplex cv.alphonse-karr and B.vulgaris cv.vittata,were measured.The results showed that the minimal fluorescence(Fo),the variable fluorescence(Fv),the maximal fluorescence(Fm)of B.tuldoides cv.Swolleninternode,B.mutiplex var.riviereorum R.Maire and B.multiplex cv.Fernleaf were higher than the other species.The PSⅡmaximal photochemical efficiency(Fv/Fm),the PSⅡpotential photochemical efficiency(Fv/Fo),the PSⅡactual photochemical efficiency(QY),and the PSⅡquantum yield of linear electron(ΦPSⅡ) of B.multiplex var.strigosa,B.mutiplex var.riviereorum R.Maire,B.textilis McClure,B.tuldoides Munro were higher than the other species.The photochemical quenching coefficient(Qp) of B.multiplex var.strigosa,B.multiplex cv.Alphonse-Karr,B.contracta and B.tuldoides Munro were higher than the other species.The non-photochemical quenching coefficient(NPQ) of B.multiplex var.strigosa,B.textilis McClure,B.tuldoides Munro,B.tuldoides cv.Swolleninternode were relatively lower.It indicated that the photosynthetic physiological functions of B.multiplex var.strigosa,B.mutiplex var.riviereorum R.Maire,B.textilis McClure and B.tuldoides Munro were better than the other bamboos,Therefore,they may be the excellent bamboos to be introduced in the coastal sandy area.