【摘要】 用不同浓度的乙草胺对小麦幼苗染毒处理,检测小麦幼苗内的过氧化氢酶(CAT)活性的变化.结果表明:各实验组随染毒时间的延长,在不同质量浓度乙草胺的胁迫下,小麦幼苗细胞的CAT活性呈现出不同的变化趋势.在低质量浓度时,CAT活性表现出先下降后升高,再降低的特点;在中质量浓度时,CAT活性表现出先升高后下降,再升高的特点;在高质量浓度时,CAT活性表现出缓慢下降的特点.在乙草胺的胁迫下,小麦幼苗内CAT活性与对照组相比,差异极显著(P<0.01).结论:乙草胺对小麦幼苗有较强的毒性效应.更多还原

【Abstract】 In order to research the influence of herbicide on Common Wheat catalase(CAT),the activity curves of CAT in wheat seedlings can be clearly detected by acute toxicity experimental method by applying different concentration of herbicide Acetochlor to pass on individual treatment to wheat seedling cells.Results show that with the increase of exposure time,under acetochlor stress of different concentrations,the CAT activity of the wheat seedlings cells takes on different changing trends.At low mass concentration,the CAT activity will first fall,and then go up and at last fall again;at medium mass concentration,the CAT activity will rise first,then fall and at last rise again;at high mass concentration,the CAT activity will decline very slowly.Under acetochlor stress,the CAT activity of wheat,compared with the control group,is significantly different(P<0.01),which helps draw a conclusion that acetochlor has a rather strong poisonous effect upon wheat seedlings.更多还原