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Difference in Cd2+-resistance and Cd2+ contents between two varieties of hybrid rice seedlings under Cd2+ stress
Pages: 44-47
Year: Issue:  4
Journal: Rural Eco-Environment

Keyword:  Cd2+LiangyoupeijiuShanyou 63stressresistance physiology;
Abstract: Effects of Cd2+ stress on growth,protective enzymes,MDA content,Cd2+ content and photosynthetic characters of rice were studied.The results show that in the rice seedlings of Shanyou-63 under Cd2+ 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 Cd2+ content was lower in the aerial part and higher in the underground part.The experiment demonstrates that Liangyoupeijiu is more tolerant to Cd2+ pollution than Shanyou 63.
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