摘要
采用盆栽试验研究了锌、镉单一及复合污染对重金属蓄集植物黑麦草生长、叶绿素、抗氧化酶活性、锌及镉吸收的影响。结果表明,锌、镉及复合污染对黑麦草生物量存在不同程度的抑制作用。锌、镉及复合污染均明显降低了黑麦草叶绿素含量,提高了叶片POD、SOD的活性。黑麦草吸收的锌、镉主要集中在植株地上部。以锌、镉复合污染的处理植株抗氧化酶POD、SOD活性最强,对锌、镉的吸收量最大,其地上部锌、镉含量分别达到(3108.72、73.97mg/kg)。黑麦草存在作为土壤重金属锌、镉复合污染植物修复材料的潜力。
Pot experiments （root rag method） were carried out to investigate the influence of Cadmium, Zinc and their combined pollution on plant growth, chlorophyll concentration, antioxidation enzyme activity, Zn^2＋ and Cd^2＋ accumulation in ryegrass （Loliurn perenne L.）. The results showed that the inhibition of Cadmium, Zinc and their combined pollution to the plant growth was observed. Chlorophyll concentrations decreased, and activities of POD and SOD were increased by Cadmium, Zinc and their combined pollution. After taken by ryegrass, Zn^2＋ and Cd^2＋ were distributed mainly in shoot. The maximums of activities of shoot POD, SOD, and absorption of Zn^2＋ and Cd^2＋ were found at Cadmium and Zinc combined pollution treatment, its Zn^2＋ and Cd^2＋ concentrations in shoot were 3108.72, 73.97 mg/kg, respectively.
出处
《中国农学通报》
CSCD
2006年第6期365-368,共4页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金项目(20477032)。
关键词
重金属蓄集植物
黑麦草
抗氧化酶
锌
镉
Hyperaccumulator
ryegrass
Zn^2＋, Cd^2＋ and their combined pollution
antioxidation enzyme
Zn^2＋ and Cd^2＋ absorption
