期刊论文

中文

水土保持学报

1009-2242

2007

21

6

86-91

10.3321/j.issn:1009-2242.2007.06.020

四川农业大学2006年校科技青年创新

本校为其他机构

通过人工气候箱盆栽实验,研究Pb,Zn及其复合胁迫对小鳞苔草（Carex gentilisFranch.）根和叶中SOD,POD及CAT活性的影响。结果表明：叶片SOD活性随Pb和Zn浓度增加均呈缓慢上升趋势,根部SOD则表现为有升有降的过程,Pb＋Zn复合处理可提高根部和叶片SOD活性,最高分别为201.8 U/gFW和233.1U/gFW。根部POD活性随Pb,Zn浓度增加均出现不同程度提高,但叶片POD活性呈有升有降的过程;根部和叶片POD在Pb＋Zn复合处理中活性增幅明显,最高分别为对照的7.47倍和1.49倍。根部和叶片中CAT在Pb,Zn及其复合处理中活性均受到不同程度的抑制。方差分析显示,Pb对根部3种酶活性影响显著;Zn对叶片POD活性影响显著;Pb＋Zn...

In this paper,the relationship between Zn,Pb and the activity of the POD,SOD and CAT enzymes within the roots and leaves of Carex gentiles Franch.was examined.This was done through potted plant experiments carried out in the diurnal growth incubator.The results demonstrate a greater amount of SOD activity with increasing amounts of Zn and Pb within the leaves of the plant.In the roots,however,SOD activity fluctuated with increased amounts of Zn and Pb and the combination of them increased the activity of SOD in the roots and leaves.This suggest...