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Studied of Growth and Photosynthesis in Jinguang Plum Seedlings under Different Salt Stresses

LIU Zun-chun,SUN Yong-dong, ZHAO Run-zhou,WANG Jun-tao (Henan Institution of Sci-Tech,Xinxiang,Henan 453003,China)  
Using potted Jinguang plum seedlings as material,effect of salt stress on the growth and photosynthesis of seedlings were studied.The results showed that the growth of Jinguang plum seedlings were remarkably restrained by salt stress.With the increasing of salt concentration,the plant height,leaf area,leaf fresh weight,leaf dry weight,stem dry weight and root dry weight were remarkably decreased,and the chlorophyll content,photosynthesis rate,transpiration rate and stomatic conductance in leaves were declined too,but the intercellular CO2 concentration was inclined.The primary reason of the decrease of photosynthesis rate was nonstomatic factor under salt stress.
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