摘要
以紫花苜蓿作为研究对象,探讨了不同浓度的纳米氧化铜对紫花苜蓿种子发芽和幼苗生长的影响,并和硫酸铜处理进行了对比。结果表明:纳米氧化铜体积浓度达到0.0125 mol/L时开始对紫花苜蓿种子的发育产生明显抑制作用,硫酸铜体积浓度达到0.4 mmol/L时开始对紫花苜蓿种子的发育产生明显抑制作用;和对照纯水处理相比,虽然不同浓度的纳米氧化铜对紫花苜蓿幼苗的根重和苗重没有显著影响,但是对紫花苜蓿种子的发芽率和幼苗长度都表现出显著的抑制作用,并且随着纳米氧化铜浓度的增大抑制作用增强。推测纳米氧化铜表现出来的毒性是游离在溶液中的Cu^(2+)和作为纳米材料所具有的纳米效应共同引起的。
Effects of different concentrations of nano-copper oxide on the seed germination and seedling growth of alfalfa were studied with alfalfa as the object,and comparing with CuSO4 treat-ments.The results showed that there was obvious inhibition on alfalfa seed development when nan-copper oxide concentration reached 0.0125 mol.L,or CuSO4 concentration reached 0.4 mmol.L.Com-pared with the pure water treatment,there were no significant influences on alfalfa’s root weight and seedling weight,but there were significant influences on seed germination rate and seedling length,and higher the concentrations of nan-copper oxide,stronger the inhibition.We speculated that the toxicity of nano-copper oxide was common caused by free Cu2＋ in solution and the nano-effect as nanometer materials.
出处
《上海农业学报》
CSCD
北大核心
2014年第4期47-51,共5页
Acta Agriculturae Shanghai
基金
上海市科学技术委员会项目(11DZ2272100)资助
2011年上海高校本科重点教学改革项目<面向全校本科生的公共实验创新平台的构建>[沪教委高(2011)52号]
2011年度上海地方高校实验室专项建设:上海大学基础生物学实验室建设[沪教委高(2011)53号]
