烟草科技2016，Vol.49Issue(4)：16-20,5.DOI:10.16135/j.issn1002-0861.20160403
硅酸钠对烟草青枯病的控病效果及烟叶膜脂过氧化的影响
Effects of sodium silicate fertilizer on bacterial wilt control and lipid membrane peroxidation during tobacco growth
摘要
Abstract
To clarify the effects and mechanisms of silicate fertilizer on tobacco resistance against bacterial wilt disease, field experiments were carried out with sodium silicate (Na2SiO3) on the disease incidence, disease index and lipid membrane peroxidation of Yunyan87. The results showed that Na2SiO3 application reduced the disease incidence and disease index on tobacco bacterial wilt disease. Comparing with the control, the disease incidence of tobacco seedlings treated with Na2SiO3 on the 90th and 100th days after transplanting decreased by 13.14% and 12.08%, and the disease index by 23.34% and 21.26%. The difference between the treated tobacco and the control was statistically significant. With the proceeding and depravation of bacterial wilt disease, the contents of H2O2 and malondialdehyde (MDA) in tobacco leaves as well as membrane permeability and K+leakage increased. Na2SiO3 application significantly decreased the contents of H2O2 and MDA, alleviated the membrane damage of tobacco, improved catalase activity, by significantly reducing the activities of superoxide dismutase and peroxidase.关键词
烟草/硅酸钠/青枯病/膜脂过氧化/丙二醛(MDA)/超氧化物歧化酶(SOD)/过氧化物酶(POD)/过氧化氢酶(CAT)Key words
Tobacco/Sodium silicate/Bacterial wilt disease/Lipid membrane peroxidation/Malondialdehyde (MDA)/Superoxide dismutase (SOD)/Peroxidase (POD)/Catalase (CAT)分类
农业科技引用本文复制引用
徐宋萍,邓新发,林汲,罗丽娟,唐莉娜,陈星峰,李延..硅酸钠对烟草青枯病的控病效果及烟叶膜脂过氧化的影响[J].烟草科技,2016,49(4):16-20,5.基金项目
中国烟草总公司福建省公司科研项目“硅对烤烟产量品质的影响及其施用技术研究”(闽烟合同［2013］63号)。 （闽烟合同［2013］63号）
