Effects of Environment Factor on Chlorophyll Fluorescence Parameters on Maize

doi:10.7668/hbnxb.2010.06.039

Abstract

Abstract: Effects of different light time, light intensity, C0₂ consistence and water level were studied on the chlo— rophyll fluorescence parameters of leaves in maize.The Fluorescence kinetic curve show that with the lighting pro· longed, chlorophyll fluorescence presented the ETR, qP and NPQ that gradually rose and kept stable after 20 minutes illumination in synchronization with it photosynthesis.Fluorescence light curve show that with the lighting strengthen, its PhiPS II and light intensity appeared linearly and negatively correlated.Its PhiC0₂ and light intensity appeared lin— early and negatively correlated when the light intensity surpassed 500 mol/(m²·s)extension.PhiC0₂ and light in· tensity appeared linearly and positively correlated when the light intensity less then 500 p。mol/(m² ·s)extension.ACI Curve show that its photosynthetic rate, PhiPS II and PhiC0₂ and ETR value have a positive relation to carbon dioxide concentration in a certain extent.The value of Fm, Fv/Fm, PhiPSⅡ, PhiC0₂ and ETR were decreased under the ana— batic water stress.But the Fo and NPQ value were increased with the deepening water stress.Analysis indicated that photosystemH was damaged, and heat disseminate was increased to defend strong light damage.Light suppress phenom— ena was emerged in diurnal variation of Fv/Fm.Suppress degree was increased and the ordinary level time was pro— longed under water stress.

Key words: Environment factor, Maize, Chlorophyll fluorescence

CLC Number:

S513.01

LIU Ming, QI Hua, ZHANG Zhen-ping, LIANG Yi, YU Ji-lin, WU Ya-nan, JIA Qian. Effects of Environment Factor on Chlorophyll Fluorescence Parameters on Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(6): 198-204. doi: 10.7668/hbnxb.2010.06.039.

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