氮素缓解春小麦花后高温早衰的荧光特性研究

坚天才,吴宏亮,康建宏,李鑫,刘根红,陈倬,高娣

Fluorescence Characteristics Study of Nitrogen in Alleviating Premature Senescence of Spring Wheat at High Temperature After Anthesis

JIAN TianCai,WU HongLiang,KANG JianHong,LI Xin,LIU GenHong,CHEN Zhuo,GAO Di

表2 各指标的计算公式及含义

Table 2 Calculation formulate and implications of the indicators

参数Indicator 说明Illustration F0 初始荧光产量Initial fluorescence yield Fm 最大荧光产量Maximum fluorescence yield PI 所有荧光参数的综合指标 Synthesis of all fluorescence parameters Fv/Fm 最大光化学效率Maximum photochemical efficiency Fv/F0 捕获光能与热耗散能量的比值 Ratio of captured light energy to heat dissipated energy VJ 电子经过质体醌A(Q)时的能量耗散比率Energy dissipation ratio of electrons passing through plastid quinone A (Q) ψ0=ET0 /TR0= 1-VJ 反应中心捕获的激子中用来推动电子传递到电子传递链中超过QA的其他电子受体的激子占用来推动QA还原激子的比率 Rate of excitonic occupancy in excitons captured by reaction centers that push electrons to transfer to electron transport chains that exceed QA of other electron acceptors φE0=[1-(F0/Fm)]×ψ0 吸收的能量用于电子传递的量子产额Quantum yield of absorbed energy for electron transfer φD0=1-φP0=F0/Fm 用于热耗散的量子比率 Quantum ratios for heat dissipation ABS/RC=M0×(1/VJ) ×(1 /φP0) 单位反应中心吸收的光能 Light energy absorbed by the unit reaction center TR0/RC=M0×(1/VJ) 单位反应中心捕获的用于还原QA的能量 Energy captured by the unit reaction center for reducing QA ET0 /RC=M0×(1/Vj) ×ψ0 单位反应中心捕获的用于电子传递的能量 Energy captured by a unit reaction center for electron transfer DI0 /RC=(ABS/RC)–( TR0 / RC) 单位反应中心耗散掉的能量 Energy dissipated in the unit reaction center