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《Journal of Beijing University of Agriculture》 2007-03
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Relations among Water Potential,MDA,Protective Enzymes Activities and Drought-resistance of Peach Rootstocks

CAO Yan-ping,ZHU Li-xin,JIA Ke-gong(College of Agronomy and Biotechnology,China Agricultural University,Beijing 100094,China)  
Three peach rootstocks(Prunus mira;Prunus tomentosa.;Prunus pedunculata) were treated under soil gradual drought stress.The relations among water potential,MDA,protective enzymes activities and drought-resistance were observed.The result showed that the water potential of three rootstocks decreased with reduction of soil water content and had significantly positive correlation with soil relative water content.the water potential of drought-resistant rootstock reduced slowly.Drought treatment increased MDA content and the MDA content of drought-sensitive rootstock accumulated faster.SOD activity of drought-resistant rootstock increased significantly in initial stages of drought.Meanwhile,SOD activity of drought-sensitive rootstock decreased.It was a damage response for increasing POD activity in Prunus mira.CAT activity had the different effects in different drought-resistant peach rootstocks.
【Fund】: 国家“948”项目(201035)
【CateGory Index】: S662.1
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