Effect of soil drought on physiological characteristics of winter wheat seedlings

This paper deals with the physiological characteristics of winter wheat seedlings under different soil drought conditions.The results showed that leaf chlorophyll A content,chlorophyll B content,total chlorophyll content,Pn, TR,g_s,plant height,leaf area,leaf dry weight,stem dry weight,root dry weight and total biomass decreased with soil water decreasing,but leaf WUE and R/T increased with soil water decreasing.And it was found on the basis of analyses that the linear relationship between Pn,TR,g_s,WUE and soil water content was extremely remarkable.In conclusion,soil drought had important effects on photosynthetic characteristics,transpiration characteristics,stomatal conductance,WUE and growth characteristics of winter wheat seedlings.