农学学报2012，Vol.2Issue(7)：55-58,62,5.
锌对黄瓜幼苗根系生长及保护酶活性的影响
Effects of Zinc on Growth and Activities of Protective Enzymes of Cucumber Seedling Roots
摘要
Abstract
To improve the yield and quality of cucumber,the study dealt with the effects of zinc on growth and activities of protective enzymes of cucumber seedling roots,which cultivated in hydroponic nutrient solution（zinc deficiency 1/2 Hoagland nutrient solution）,with different concentrations of ZnSO4.7H2O solution（0,0.1,0.2,0.4 mg/L）.The results showed that：（1） with increasing concentrations of zinc,the total length of roots of cucumber seedlings,average diameter,total area,total volume,the number of root tips increased gradually,reached the peak in Zn3（0.4 mg/L）.（2） In the Zn0（0 mg/L） to Zn2（0.2 mg/L） range,with the zinc concentration increased,POD,CAT activity increased.When zinc concentrations greater than Zn2,POD,CAT activity decreased;SOD activity increased significantly with increase in zinc concentration;malondialdehyde（MDA） content significantly reduced with increase of zinc.（3） Considering the physiological indicators of root growth of cucumber seedlings,the optimum concentration of ZnSO4.7H2O was： 0.2mg/L of 1/2 Hoagland nutrient solution.关键词
锌/黄瓜/生长指标/保护酶活性Key words
Zinc/Cucumber/Growth Index/Activities of Protective Enzymes分类
农业科技引用本文复制引用
杜新民..锌对黄瓜幼苗根系生长及保护酶活性的影响[J].农学学报,2012,2(7):55-58,62,5.基金项目
山西师范大学自然科学基金项目 （）
山西师范大学生命学院自然科学基金项目“微量元素及其施配对蔬菜生理指标及产量品质影响的研究” （）
