Growth and Photosynthetic Characteristics of Amesiodendron chinense under Water Stress

Growth and photosynthetic characteristics of Amesiodendron chinense under different levels of water stress were examined.The relative growth of diameter and height,relative water content of leaf decreased with the decrease of soil water.The differences were significant.The chlorophyll content was the lowest at 20% water treatment,and different with others.With the reduction of soil water,the photosynthetic rate,transpiration rate,stomatal conductance and water use efficiency all decreased.Intercellular CO2 concentration decreased with the increase of soil water.The falling of photosynthetic rate was affected by non-stomatal limitation factors.