In order to provide theoretical basis for wheat high yield and drought cultivation during late growth stage,under rain-shelter pot-culture conditions,three winter wheat cultivars,Changwu 134,Changhan58 and Xinong9871,were choosed as materials to evaluate the effects of water deficit on photosynthetic characteristics and yield of wheat during grain filling stage.The results indicated that water stress after anthesis had significant effect on Fv/Fo and Fv/Fm of PSⅡ,net photosynthetic rate(Pn),the grain yield ...
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