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《Acta Prataculturae Sinica》 2011-04
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Physiological responses of Agropyron cristatum under Na_2CO_3 and NaHCO_3 stress

GAO Wen-jun,XU Jing,XIE Kai-yun,DONG Kuan-hu(College of Animal Science and Technology,Shanxi Agricultural University,Taigu 030801,China)  
Seedlings of Agropyron cristatum were stressed with Na2CO3 and NaHCO3(0,30,60,90,120,or 150 mmol/L) in the greenhouse.Eight indices(biomass,root-shoot ratio,malondialdehyde(MDA) content,chlorophyl content,soluble sugar content,proline content,SOD activity and POD activity) were determined.As the stress increased in treatments,the content of MDA and soluble sugar also increased whereas the biomass,root-shoot ratio,and chlorophyl content increased initially and then decreased.The results showed that low concentrations of alkaline stress on A.cristatum had some role in promoting growth.Proline accumulated before soluble sugar and Na2CO3 stress was greater than NaHCO3 stress.
【Fund】: “十一五”国家科技支撑计划课题(2007BAD56B01);; 国家农业科技成果转化资金项目(2009GB2A300043);; 山西省基础平台建设项目(2005091006-0801)资助
【CateGory Index】: S543.9
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