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《Guizhou Agricultural Sciences》 2011-03
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Effect of Silicon under Cadmium Stress on the Biomass and Cadmium Content of Oryza sativa Seedling Root

HUANG Qiu-chan,WEI You-huan,WEI Fang-li,ZENG Zhen-fang(Department of Chemistry and Biology Engineering,Guangxi Normal University for Nationalities,Chongzuo,Guangxi 532200,China)  
Effect of silicon under cadmium stress on the biomass and cadmium content of Oryza sativa seedling root was studied by solution culture method to provide theoretical basis for clarifying the remitting mechanism of Si on Cd stress.The results showed that the fresh weight and dry weight of root under Cadmium stress(4 mg/L)showed an increasing trend with the increase of SiO2 concentration(ranging from 30~180 mg/L).When the SiO2 concentration was above 30 mg/L,the root fresh weight and dry weight of different treatments are 68.02%,85.59%,86.63%,84.25% and 86.25%,92.22%,99.66%,95.99% of CK(without cadmium stress),respectively.The root dry weight was close to CK when the SiO2 concentration was 130 mg/L.The Cd content of root treated with SiO2 was all lower than CK.
【Fund】: 广西教育厅科研基金资助项目“硅对镉胁迫下水稻幼苗抗氧化酶活性及其生理特性影响的研究”(200911MS275);; 广西高校优秀人才资助计划资助项目“硫脲类衍生物配位化合物的合成、结构与生物活性的研究”(RC2007043);; 广西民族师范学院科研基金资助项目“硅对镉胁迫下水稻幼苗抗氧化酶活性影响的研究”(ybxm200918)及“硅对铅胁迫下水稻幼苗的解毒作用及其机制研究”(xyzd2010001)
【CateGory Index】: S511
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