摘要
以福薯7-6为材料研究不同氮肥用量对菜用甘薯叶片活性氧代谢的影响。试验结果表明,氮不足或氮过量的情况下,福薯7-6叶片由于SOD活性下降,而且POD活性的提高不能及时清除SOD催化产生的H2O2,O.2-的积累提高了生物膜的过氧化作用,导致质膜相对透性增加,离子大量外渗,相对电导率增加,这些均导致叶片细胞受到伤害。
The active oxygen metabolism of vegetable sweet potato under different nitrogen levels were studied. The results showed that, under both nitrogen insufficient and excessive conditions, the leaves of ＂Fushu7 -6＂ couldn＇t remove H202 timely owing to the decrease of SOD activity and increase of POD activity. At the same time the accumulation of O 2^- aggravated peroxidation of biomembrane, leading to the increase of membrane permeability and extravasation of ion and increase of relative conductivity. These unheahh metabolisms caused the harm of cells.
出处
《福建农业科技》
2011年第2期105-107,共3页
Fujian Agricultural Science and Technology
基金
福建省青年人才项目(2008F3022)
国家甘薯产业技术体系(nycytx-16-B-12)
关键词
氮
菜用甘薯
活性氧代谢
nitrogen
vegetable sweet potato
active oxygen metabolism
