期刊论文

Effect of Cadmium Stress on Physiological and Biochemical and Enrichment Characteristics

中文

北方园艺

1001-0009

2012

10

72-76

国家自然科学基金资助项目（30970551）； 环保部全国公益性行业科研专项基金资助项目（201009022）； 湖南省科技计划重点资助项目（2010SK2004）；

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采集了南洞庭湖湿地优势植物蒌蒿及其根际土壤,进行了不同浓度的Cd胁迫处理,研究Cd对蒌蒿部分生理指标的影响及蒌蒿对Cd的富集特性.结果表明:低Cd浓度(＜15 mg/kg)胁迫能促进植株的生长,增强其生物活性,高浓度Cd(＞50 mg/kg)胁迫对萎蒿生长产生明显的抑制作用,当Cd浓度达到70 mg/kg时,蒌蒿仍能正常完成生长周期.随着Cd处理浓度的增加,蒌蒿体内叶绿素含量逐渐降低,丙二醛(MDA)含量增加,在70 mg/kg处理下达到最大值；可溶性糖和可溶性蛋白的含量逐渐呈现先上升后下降的趋势.萎蒿体内各器官对Cd的富集含量随Cd胁迫浓度的增加而显著增加,在90 mg/kg条件下,根的含量为910.66 mg/kg,茎和叶分别为375.9...

Acquisition of the South Dongting Lake and the dominant plant（Artemisia selengensis Turcz）and rhizosphere soil,for different concentrations of Cd stress treatment,Cd on some physiological indices of Artemisia selengensis and Cd accumulation of the Artemisia selengensis were studied.The results showed that low Cd concentrations（15 mg/kg） stress could promote plant growth and enhance its biological activities,high concentrations of Cd（50 mg/kg）stress on Artemisia selengensisinlaibited the produce obviously,when the Cd concentration reached ...