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	Seasonal characteristics of chlorophyll fluorescence kinetics of heteromorphic leaves in Populus Euphratica
	Chang Zongqiang; Tao Hua; Zhu Qiang
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2018
卷号	10 期号:2 页码:169-179
英文摘要	Populus euphratica Oliver grown in desert areas have polymorphic leaves, which include lanceolate to serrate oval leaves. This paper measures the chlorophyll fluorescence-induction kinetics curves of two types of heteromorphic leaves(lanceolate and serrate oval) of P. euphratica over the growth season in the Ejina Desert area, China. This is in order to study the electron transport, as well as absoprtion, distribtution, and dissipation of light energy and their adaptation characteristics. The results indicate that(1) serrate oval leaves' photosystem II(PSII) initial light-energy-conversion efficiency(Fv/Fm), potential activity(Fv/F_0), and the light-energy-utilization parameter(PI) are higher than those of lanceolate leaves; the accumulated amount of QA-(Vj) and the relative speed of Q_A deoxidation(M_0) are lower than those of lanceolate leaves;(2) the reaction center density(RC/CS_0) and electron-transfer energy(ET_0/CS_0) in the unit cross-sectional area of serrate oval leaves are higher than those of lanceolate leaves; the energy consumed in unit cross-sectional area(DI0/CS_0), and energyflow parameters(ABS/RC, ET_0/RC, TR_0/RC, and DI_0/RC) in the unit reaction center of serrate oval leaves are lower than those of lanceolate leaves;(3) the proportion of energy used for photochemical reaction and energy electron transport in serrate oval leaves(Phi_(P0), Psi_0, and Phi_(E0)) are larger than those in lanceolate leaves, and the maximum quantum yield(Phi_(D0)) of nonphotochemical reaction is less than that of lanceolate leaves. Thus, serrate oval leaves of P. euphratica have a more efficient energy-distribution strategy and better adaptability to extreme environmental conditions than lanceolate leaves.
英文关键词	chlorophyll fluorescence-induction kinetics seasonal changes Populus euphratica Oliver lanceolate leaves oval leaves
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Forestry
CSCD记录号	CSCD:6228013
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335944
作者单位	Chang Zongqiang, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Tao Hua, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Zhu Qiang, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Chang Zongqiang,Tao Hua,Zhu Qiang. Seasonal characteristics of chlorophyll fluorescence kinetics of heteromorphic leaves in Populus Euphratica[J],2018,10(2):169-179.
APA	Chang Zongqiang,Tao Hua,&Zhu Qiang.(2018).Seasonal characteristics of chlorophyll fluorescence kinetics of heteromorphic leaves in Populus Euphratica.Sciences in Cold and Arid Regions,10(2),169-179.
MLA	Chang Zongqiang,et al."Seasonal characteristics of chlorophyll fluorescence kinetics of heteromorphic leaves in Populus Euphratica".Sciences in Cold and Arid Regions 10.2(2018):169-179.