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《Rural Eco-environment》 2004-04
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Difference in Cd~(2+)-resistance and Cd~(2+) contents between two varieties of hybrid rice seedlings under Cd~(2+) stress

WANG Gui-min~1,CHEN Guo-xiang~1,CHEN Li~1,WANG Jian-an~1,L Chuan-gen~2(1.College of Life Science,Nanjing Normal University,Nanjing 210097,China; 2.Institute of Food Crops,Jiangsu Academy of Agricultural Science,Nanjing 210014,China)  
Effects of Cd~(2+) stress on growth,protective enzymes,MDA content,Cd~(2+) content and photosynthetic characters of rice were studied.The results show that in the rice seedlings of Shanyou-63 under Cd~(2+) stress,the electron activity of PSⅡ and the photosynthetic rate decreased;the content of MDA increased;the activities of protective enzymes increased at first and decreased afterwards,whereas in the rice seedlings of Liangyoupeijiu,in comparison,the activity of protective enzymes was relatively higher;the rising rate of MDA was lower;the photosynthetic rate and the electron activity of PSⅡ declined at a lower rate;The Cd~(2+) content was lower in the aerial part and higher in the underground part.The experiment demonstrates that Liangyoupeijiu is more tolerant to Cd~(2+) pollution than Shanyou 63.
【Fund】: 高校自然科学基金(02KJ180006)
【CateGory Index】: X503.2
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