摘要
利用叶绿素荧光技术测定了桃树‘21世纪’,‘96-3-4’,‘华玉’,‘农字6号’,‘瑞红一枝’,‘迎霜’和‘早霞露’等7个品种叶片光强依赖的叶绿素荧光特性。结果表明:在各个光强[PAR,0~1 856μmol·(m2·s)^(-1)]下,表观电子传递速率r(ETR)、实际光化学效率Y(Ⅱ)和光化学淬灭qP在品种间的变化趋势一致,基本上按照‘96-3-4’,‘21世纪’,‘华玉’,‘瑞红一枝’,‘农字6号’,‘迎霜’,‘早霞露’的顺序由小变大。‘96-3-4’的最大荧光(Fm)、可变荧光(Fv)、实际光化学效率Y(Ⅱ)、表观电子传递速率r(ETR)值均高于其它6个品种。表明‘96-3-4’有较高的PSⅡ活性和较强的光合生理功能,而‘早霞露’,‘迎霜’等则光化学效率较低。
The chlorophyll fluorescence technique was used to measure the light-dependent Chlorophyll fluo- rescence characteristics of leaves in seven peach cultivars, including ＇21st century＇ , ＇96-3-4＇ , ＇ Huayu＇, ＇Nongzi 6＇, ＇Ruihongyizhi＇, ＇Yingshuang＇ and ＇Zaoxialu＇ The results indicated that the changing trend of relative electron transport rate [ r（ETR） ], the effective quantum yield of PS Ⅱ [ Y（Ⅱ） ] and photochemical quenehing （qe） were identical under the photosynthetically active radiation （PAR） from 0 to 1856 μmol·（m2·s）-1, which increased in the order： ＇96-3-4＇, ＇21＇t century＇ , ＇Huayu＇, ＇ Ruihongyizhi＇, ＇ Nongzi 6＇ , ＇ Yingshuang＇ , ＇ Zaoxialu＇. The values of maximal fluorescence （ Fm） , Y（ II）, r（ETR） of ＇ 96-3-4＇ were higher than those of the other eultivars. All those suggested that the photosynthetic physiologieal function of ＇96-3-4＇ was the best, and that of ＇Yingshuang＇ and ＇ Zaoxialu＇ the worst.
出处
《河北科技师范学院学报》
CAS
2016年第2期11-15,共5页
Journal of Hebei Normal University of Science & Technology
基金
河北省自然科学基金项目(项目编号:C2014407077)
关键词
桃树
叶绿素荧光
光响应曲线
peach
chlorophyll fluorescence
light response curve
