The experiment was carried out in Open Top Chamber(OTCs).The main aim of this study was to investigate the response of various photosynthesis parameters,e.g.,net photosynthetic rate(Pn),stomatal conductance(Gs),chlorophyll content,chlorophyll fluorescence characteristics(Fv/Fm、Fv/F0) and soluble sugar content in two wheat cultivar types to elevated NH3 concentration.The results showed that:The value of Fv/Fm had no significant change in treatments.In the High NH3+Low N treatment,the values of Pn,Fv/F0 and s...
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