干旱区研究2014，Vol.31Issue(3)：550-555,6.
不同枸杞品种叶绿素荧光参数差异分析
Parameter Difference of Chlorophyll Fluorescence in Leaves of Different Cultivars of Lycium barbarum
摘要
Abstract
In this research,some cultivars of Lycium barbarum were taken as the materials.In the field experiment,the chlorophyll fluorescence parameters and the chlorophyll contents in the cultivars of L.barbarum were studied using the chlorophyll fluorescence measuring technique.The results revealed that the maximal photochemical efficiency of PS Ⅱ (Fv/Fm) and potential activity of PS Ⅱ (Fv/Fo) of Ningqi No.2 were remarkably higher than those of other three cultivars.The actual photosynthesis yield (Y(Ⅱ)),activity photosynthesis yield (Fv'/ Fm'),photochemical quenching (qP) and electron transport rate (ETR) were significantly different from different cultivars under a photo synthetically active radiation of 0-2 847 μmol · m-2 · s-1,and they were the highest in Ningqi No.2,followed by Mengqi No.1 and Damaye,and the lowest in Ningqi No.1.The initial slope α of fitting parameter ETR was similar to the change trend of ETR.The content of Chlorophyll a,Chlorophyll b and Chlorophyll a + b in Ningqi No.2 were the highest.There was an extremely significant or a significant positive correlation between chlorophyll a + b and Y(Ⅱ),Fv'/Fm',qP and ETR,but a negative correlation with NPQ.So it could be concluded that Ningqi No.2 had a higher physiological activity of PS Ⅱ and physiological basis of potential biomass,the photosynthesis capability of all the four cultivars was strong.The photochemical efficiency of Ningqi No.1 was weaker,and it was easy to suffer from photo inhibition at high light intensity.关键词
枸杞/叶绿素含量/叶绿素荧光参数/甘肃Key words
Lycium barbarum/ chlorophyll content/ chlorophyll fluorescence parameter/ Gansu province引用本文复制引用
杨娟,王有科,李捷,陈娜,李小刚,张晓娜..不同枸杞品种叶绿素荧光参数差异分析[J].干旱区研究,2014,31(3):550-555,6.基金项目
引进林业科学技术项目(948项目2011-4-39) （948项目2011-4-39）
