活性X-3B红染料对作物生态毒理指标影响的比较研究  

Comparative study on ecotoxicological indexes of crops exposure to reactive X-3B red dye.

作　　者：程云[1] 周启星[1] 宋玉芳[1] 许华夏[1] 王新[1] 任丽萍[1] 刘宛[1] 

机构地区：[1]中国科学院沈阳应用生态研究所陆地生态过程开放研究实验室,沈阳110016

出　　处：《应用生态学报》2002年第2期133-136,共4页Chinese Journal of Applied Ecology

基　　金：中国科学院"引进国外杰出人才"及百人计划支持项目(K99XE0 799990 3);教育部回国人员基金资助项目(K0 5QJ10 0 0 0 5 0 3)

摘　　要：采用作物种子暴露实验 ,研究了小麦、白菜和水稻等 3种不同作物对活性X 3B红染料污染暴露的生态毒理学指标 .结果表明 ,小麦、白菜和水稻对活性X 3B红染料污染暴露的反应各异 ,具体表现为对3种作物的种子发芽抑制半效应浓度分别为 896 5、70 10和 75 14mg·L-1,对根伸长抑制的半效应浓度分别为 6 5 34、5 882和 45 70mg·L-1;这 3种作物在从种子萌发起至第 7天时去残余种子或种皮后的鲜生物量、干生物量均随活性X 3B红暴露浓度的增加而降低 ,但鲜生物量的降低率普遍高于干生物量的降低率 ;当作物种子暴露于高浓度 (4 5 0 0和 5 0 0 0mg·L-1)的活性X 3B红时 ,小麦生物量受该有机染料污染暴露的影响最为敏感 ,水稻其次 ,白菜最为迟钝 ;就小麦、白菜和水稻等 3种作物对活性X 3B红染料污染暴露的抗性而言 ,小麦最强 ,白菜次之 ,水稻最弱 .Ecotoxicological indexes of wheat,Chinese cabbage and rice exposed to reactive X-3B red dye were studied using the experimental method of crop seed exposure.The results showed that reactions of the three crops to reactive X-3B red dye were different from each other.Based on the inhibition of seed gemination,the half effect concentration(IC\-\{50\})of wheat,Chinese cabbage and rice was 8965,7010 and 7514mg·L\+\{-1\}.Based on the inhibition of root elongation,the IC\-\{50\} of wheat,Chinese cabbage and rice was 6534,5882 and 4570mg·L\+\{-1\}.When seedlings were cultured for seven days after the gemination of seeds and the remaining seeds or husks were discarded,fresh and dry growing biomass of the three crops exposed to the dye was both decreased with the increasing the concentration of reactive X-3B red dye.However,the decrease rate of fresh biomass was higher than that of dry biomass.Biomass index of wheat was most sensitive to reactive X-3B red dye,followed by rice,and Chinese cabbage was most inertia when the crops were exposed to reactive X-3B red dye with the high concentration of 4500 and 5000mg·L\+\{-1\}.As far as the tolerance of wheat,Chinese cabbage and rice to reactive X-3B red dye was concerned,wheat had the strongest tolerance,on the contrary rice had the wakestone.

关 键 词：染料污染 活性X-3B红 生态毒理 作物效应 

分 类 号：X171.5[环境科学与工程—环境科学]