光照对沙葱种子萌发及抗氧化代谢的影响  

Effect of Light on Germination and Antioxidant Metabolism of Allium mongolicum Seed

作　　者：郭霏[1] 鄂圆圆[1] 杨忠仁[1] 郝丽珍[1] 张凤兰[1] 朱文峰 夏峰 

机构地区：[1]内蒙古农业大学农学院内蒙古自治区野生特有蔬菜种质资源与种质创新重点实验室,呼和浩特010019 [2]内蒙古赤峰和润农业高新科技产业开发有限公司,内蒙古赤峰024070

出　　处：《种子》2017年第8期28-31,共4页Seed

基　　金：国家自然科学基金(31260474);内蒙古自然科学基金项目(2015MS 0362);公益性行业(农业)科研专项(201203004);内蒙古主席基金项目;内蒙古农业大学科技创新(培育)团队(NDPYTD 2013-3)

摘　　要：研究了光照对沙葱种子萌发及抗氧化代谢的影响,结果表明,12h光照和24h光照下的沙葱种子发芽率仅为对照的20.8%和8.8%,表明沙葱存在光休眠现象,为需暗种子;在12h和24h光照处理下,催芽前期SOD、POD活性及Vc含量水平较高,MDA和CAT含量低于0h;而在种子萌发后期,SOD、POD活性降低,MDA和CAT含量升高,说明在光胁迫下,沙葱种子萌发后期的膜脂过氧化作用增强。Study on the effect of light on Germination and antioxidant metabolism of Allium mongolicure seed.The results showed that 12 h and 24 h light seed germination rate of Allium mongolicum were 20.8% and 8.8%, showed that the Alliurn mongolicum seed for dark seed,and exist light dormancy phenomenon; in the 12 h and 24 h light treatment, germination of early SOD and POD activity and Vc content in high level,MDA and CAT was lower than that of control,and in late SOD, seed germination decreased, the activity of POD, MDA and CAT content in light stress,membrane lipid peroxidation of Allium mongolicurn seed increase, this illustrates that germination stage enhanced.

关 键 词：光照 沙葱种子 萌发 抗氧化代谢 

分 类 号：S633.9[农业科学—蔬菜学]