Journal of Guangxi Normal University(Natural Science Edition) ›› 2012, Vol. 30 ›› Issue (3): 252-256.

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Comparative Study on Chlorophyll Fluorescence Characteristics of Three Species of Floating Plants

LIANG Shi-chu1,2, LI Feng1, TIAN Hua-li1, WU Wen-xiang1, YANG Chen-ling1, HUANG An-shu1   

  1. 1.College of Life Sciences,Guangxi Normal University,GuilinGuangxi 541004,China;
    2.Key Laboratory of Ecology of Rare and Endangered Species and Environmental ProtectionGuangxi Normal University,Ministry of Education,Guilin Guangxi 541004,China
  • Received:2012-05-30 Online:2012-09-20 Published:2018-12-04

Abstract: The characteristics of chlorophyll fluorescence of three main floatingplants,Ludwigia adscendens,Eichhornia crassipes and Alternanthera philoxeroides,in the karst wetland of Huixian Town of Guilin City were studied.The maximalquantum yield values of photosystemⅡ(Fv/Fm) of these species werelarger than0.8.During the light-induced process,the actual quantum yield (Y),relativeelectron transport rate (rETR),photochemical quenching coefficient (qP) and non-photochemical quenching coefficient (NPQ) of E.crassipes and A.philoxeroides reached steady state faster than those of L.adscendens,while the NPQ curve of L.adscendens did not display steady state.After dark or light adaptation,the maximal relative electron transport rate (rETRmax),half-saturation light intensity (Ek) and initial slope (α) of E.crassipes and A.philoxeroides were larger than those of L.adscendens.

Key words: chlorophyll fluorescence, induction curve, rapid lightcurve, floating plant

CLC Number: 

  • Q948.8
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