摘要
利用叶绿素荧光技术测定“绯扇”“藤彩虹”“光谱”“自由精神”“小女孩”5个现代月季品种的叶片光强依赖的叶绿素荧光性.结果表明:日本月季品种“绯扇”叶片PSⅡ的原初光能转换效率(Fv/Fm)和PSⅡ潜在活性(Fv/F0)较高.表观光合电子传递速率(ETR)和实际光化学效率Y(PSⅡ)在5个品种间的变化趋势基本一致,按照强弱的顺序依次为:“光谱”“小女孩”“藤彩虹”“自由精神”“绯扇”;而非光化学淬灭系数NPQ在5个品种间的变化趋势与上述相反.“光谱”月季的表观电子传递速率ETR和实际光化学效率Y(PSⅡ)均高于其他4个月季品种,而非光化学淬灭系数NPQ较低.表明“光谱”月季具有较高的PSⅡ活性和较强的光合生理功能,可以作为月季品种选育的优良种质资源.
The chlorophyll fluorescence technique is used to measure the light-dependent Chlorophyll fluorescence characteristics of leaves in five rose cultivars,including“Fei Shan”“Teng Cai Hong”“Spectra”“Spirit of freedom”“Maidy”.The results indicate that,the maximal photochemical efficiency of photosystemⅡ(F/F)and the potential activity of photosystemⅡ(F/F)of“Fei Shan”rose are higher.The changing trend of relative electron transport rate(ETR)and the effective quantum yield of PSⅡ[Y(Ⅱ)]among the five tested rose varieties are identical which decreased in the following order:“Spectra”“Maidy”“Teng Cai Hong”“Spirit of freedom”“Fei Shan”,while the changing trend of non-photochemical quenching(NPQ)among the five tested rose varieties are reverse.The values of relative electron transport rate(ETR)and effective quantum yield of PSⅡ[Y(Ⅱ)]of“Spectra”were higher than those of the other four cultivars,while non-photochemical quenching(NPQ)is lower.All these findings suggest that‘Spectra’rose has higher PSⅡactivity and strong photosynthetic physiological function,which can be used as an excellent germplasm resource for rose breeding.
作者
郭国业
张泽
杜丽
宋玉伟
GUO Guoye;ZHANG Ze;DU Li;SONG Yuwei(School of Life Science and Technology,Nanyang Normal University,Nanyang 473061,China)
出处
《南阳师范学院学报》
CAS
2020年第3期43-46,共4页
Journal of Nanyang Normal University
基金
河南省科技厅科技攻关项目(182102110329)
南阳师范学院人才引进科研启动基金(18005)。
关键词
月季
叶绿素荧光
光化学效率
光响应曲线
rose
chlorophyll fluorescence
photochemical efficiency
light response curve
