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当前位置: 首页 > 文章 > 石竹(Dianthus chinensis)对土壤镉胁迫的生理生化响应 四川农业大学学报 2013,31 (3) 290-295，327
Position: Home > Articles > Physiological and Biochemical Responses of Dianthus chinensis to Soil Cadmium Stress Journal of Sichuan Agricultural University 2013,31 (3) 290-295，327

石竹(Dianthus chinensis)对土壤镉胁迫的生理生化响应

作  者：
贺靖舒;丁继军;潘远智;刘柿良;李丽
单  位：
西南林业大学林学院;四川农业大学风景园林学院
关键词：
Cd胁迫;石竹;生理生化;响应
摘  要：
【目的】为探讨石竹对土壤重金属Cd污染的抗性和敏感性。【方法】采用盆栽控制试验,测定不同浓度(0、0.3、1、3、10、30、50mg/kg)Cd胁迫下石竹叶片生理生化指标。【结果】研究表明,石竹根重、地上部干重、株高、抗性系数以及可溶性蛋白含量以3mg/kg Cd浓度为阈值呈低促高抑现象。随Cd处理浓度、时间的增加,游离脯氨酸、丙二醛含量和质膜相对透性均逐渐上升,且在高浓度(≥10mg/kg)下上升更为显著;SOD、POD和CAT酶活性呈先上升后下降趋势,上升最大值的处理浓度分别为10、3、3mg/kg。【结论】低浓度Cd对石竹影响较小,当浓度大于10mg/kg时,其毒性随浓度和时间的增加而明显增大,表明石竹对土壤Cd胁迫有一定适应性。
译  名：
Physiological and Biochemical Responses of Dianthus chinensis to Soil Cadmium Stress
作  者：
HE Jing-shu;DING Ji-jun;PAN Yuan-zhi;LIU Shi-liang;LI li;College of Landscape Architecture,Sichuan Agricultural University;The Three Gorges Industrial Co.,Ltd.;Southwest Forestry University College of Forestry;
关键词：
cadmium stress;;Dianthus chinensis;;physiology and biochemistry;;response
摘  要：
【Objective】The aim of this study was to investigate the resistances and susceptibility of D.chinensis to soil heavy metal cadmium(Cd).【Method】A pot-experiment was conducted to measure physiological and biochemical indicators of D.chinensisleaf grown in different Cd concentrations(0,0.3,1,3,10,30and 50mg/kg).【Results】The biomass of root and shoot,plant height,resistance coefficient and content of soluble protein,increased when Ca concentration was below 3mg/kg but the opposite was true when Ca concentration was above 3mg/kg.With the increase of cadmium concentrations and treatment time,free proline,malondialdehyde and relative conductivity increased gradually.The activities of SOD,POD and CAT increased initially and then declined.【Conclusion】Low Cd concentrations had little effects on D.chinensis when Cd concentration>10mg/kg,the toxicity of cadmium was increased with an increase in concentration and time,implying that D.chinensis is relatively adaptable to soil cadmium stress.

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