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《Journal of Henan Agricultural Sciences》 2009-12
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Effect of Exogenous Trehalose on Physiological Indicators of Tomato Seedling under NaCl Stress

YANG Jin,LIAN Hua,WANG Yan-hong,LIN Xiao-ying,MA Guang-shu(Horticultural Department of Agricultural College,Heilongjiang August First LandReclamation University,Daqing 163319,China)  
Under 0.4% NaCl stress condition,the effects of exogenous trehalose at the concentrations of 0.3%-0.5% on the growth including plant height,stem diameter and root activity,leaf ptotective enzyme activities and oxidative damage in tomato seedlings were investigated.When the exogenous trehalose concentration is 0.5%,its effect on alleviating NaCl stress damage to the tomato seedling is the best.The seeding growth,chlorophyll content,and activities of protective enzymes(SOD)in leaves increase significantly,while malondialdehyde(MDA)content in leaves was significantly decreased.So,0.5% exogenous trehalose promoted the salt tolerance of tomato seedling.
【Fund】: 黑龙江省教育厅科研课题项目(11511257)
【CateGory Index】: S641.2
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