【摘要】 【目的】结合枸杞栽培品种之间光合参数和叶绿素荧光参数的差异性分析,对比研究了9个枸杞栽培品种间光合气体交换参数和内在品质差异。【方法】在田间试验条件下,试验采用随机区组设计,分别于7、8月晴天上午9:30-11:30之间测定光合及荧光指标,研究分析各供试品种间枸杞的内在品质,并分析其差异。【结果】以宁杞3号Pn、WUE、WUEi、PSⅡ最大光化学效率(Fv/Fm)和PSⅡ潜在活性(Fv/Fo)都显著高于其他8个供试品种,揭示了宁杞3号的光合能力和水分利用效率最强;并且进一步得出宁杞3号的多糖、总糖、黄酮、甜菜碱、类胡萝卜素含量都居于首位,其中甜菜碱的含量显著高于其他供试品种。其次为扁果枸杞、宁杞1号、宁杞4号、7号,再次为宁杞5号、0901、蒙杞1号,0702的光能利用率和果实品质较弱。【结论】结合各品种的光合气体交换参数及叶绿素荧光参数,进行不同枸杞栽培品种间的品质对比分析,得出宁杞3号、宁杞1号、宁杞4号、宁杞7号、扁果枸杞,这5个栽培品种非常适宜大面积推广种植;宁杞5号、0901可以作为辅助品种适当发展;而蒙杞1号、0702这2个品种不适宜发展种植。更多还原

【Abstract】 【Objective】The aim of this experiment was to compare chlorophyⅡfluorescence,photosynthetic parameters and fruit quality among 9 L.barbarumcultivars.【Method】This experiment was a completely randomized design the chlorophyll fluorescence and photosynthetic parameters of each cultivar were measured in the field conditions between 9:00 to11:30in July and August.Moreover,the fruit quality was also analyzed.【Results】Ningqi-3 showed higher Pn,WUE,WUEi,PSⅡ(Fv/Fm)and PSⅡ(Fv/Fo)compared to other 8 cultivars,suggesting that Ningqi-3 has higher photosynthetic capacity and stronger water utilization ability and light energy.Ningqi-3exhibited the highest values in total sugar,polysaccharide content,sweet fruit base,flavonoid and carotenoids.The light use efficiency and fruit quality were lower in 0702 than in other cultivars.【Conclusion】According to chlorophyll fluorescence,photosynthetic parameters and fruit quality,Ningqi-3,Ningqi-1,Ningqi-4,Ningqi-7 and Bianguogouqi may be popularized in this area.Ningqi-5 and 0901 could be an assistant cuitivar.Mengqi-1 and 0702 is not suitable for development in this area.更多还原