摘要
用水培法探究了硫酸铜对黑豆种子萌发、幼苗生长和生理指标的影响.结果显示,高浓度的硫酸铜抑制了黑豆种子的发芽势、发芽率、发芽指数和幼苗的鲜重、根长和苗高.随着硫酸铜处理浓度的增加,黑豆幼苗中的SOD活性呈上升趋势,POD和CAT活性先升高后降低,MDA含量逐渐升高,可溶性蛋白含量先增高后下降.结果表明,高浓度硫酸铜可以改变抗氧化酶活性,显著提高MDA含量和降低可溶性蛋白含量,从而抑制了黑豆种子的萌发和幼苗的生长.硫酸铜对黑豆幼苗根的抑制作用明显强于对地上部分的抑制.
Abstract
The effects of copper sulfate on seed germination,seedling growth,and physiological indexes of black bean were studied using hydroponics.The results indicate that high concentration of copper sulfate inhibits the ger-mination potential,germination rate,germination index,fresh weight,root length,and seedling height of black bean seeds.As the concentration of copper sulfate treatment increased,SOD activity in black bean seedlings in-creased,POD and CAT activities first increased first and then decreased,MDA content increased gradually,and soluble protein content initially increased first and subsequently decreased.In conclusion,the high concentration of copper sulfate changes the activity of antioxidant enzymes,significantly increases MDA content,and decreases solu-ble protein content,thereby inhibiting seed germination and seedling growth in black beans.The inhibition effect of copper sulfate on the roots of black bean seedlings is markedly stronger than on the ground parts.
国家科技期刊平台
NSTL
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