光照处理下不同温度对沙葱种子萌发和生理指标的影响  

Effects of Different Temperatures on Germination and Physiological Indexs of Allium mongolicum Regel Under Light Treament

作　　者：魏鹏超 鄂圆圆[1] 张东[1] 杨忠仁[1,2] 张凤兰 WEI Peng-chao;E Yuan-yuan;ZHANG Dong(College of Horticulture and Plant Protection,Inner Mongolia Agricultural University/Inner Mongolia Key Laboratory of Germplasm Resources and Germplasm Innovation of Wild Specific Vegetables,Hohhot,Inner Mongolia 010000)

机构地区：[1]内蒙古农业大学园艺与植物保护学院/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,内蒙古呼和浩特010000 [2]内蒙古自治区农牧业大数据研究与应用重点实验室,内蒙古呼和浩特010011

出　　处：《安徽农业科学》2024年第3期31-34,共4页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(31760081);内蒙古自然科学基金项目(2019MS03055);内蒙古自治区种业科技创新重大示范工程揭榜挂帅项目;内蒙古自治区科技重大专项(2019ZD016);内蒙古自治区应用技术研究与开发项目(2019GC237)。

摘　　要：为探索沙葱种子萌发的最适条件,以沙葱种子为试材,开展光照处理下不同温度对其种子萌发特性及抗氧化酶活性的影响。结果表明,各光照处理下,20℃时发芽率极显著高于10与30℃;12和24 h光照处理时,10与30℃下种子发芽率仅为0。表明10和30℃均不能提高种子在光照条件下的萌发率,反而导致光对其抑制作用加剧。黑暗与12 h光照环境下,10和30℃处理时种子SOD活性在萌发后期明显高于20℃;各光照环境下,20℃处理时种子POD和CAT含量均高于10与30℃,而MDA含量则低于10与30℃,可见沙葱种子是典型的需暗性种子,适宜萌发温度为20℃,各光照环境下高温与低温均会限制种子的萌发。In order to explore the optimal conditions of Allium mongolicum seed germination,using Allium mongolicum seeds as test materials,the effects of different temperatures on the germination characteristics and antioxidant enzymes of Allium mongolicum seeds were studied.The results showed that the germination rate at 20℃was significantly higher than that at 10 and 30℃.Under 12 and 24 h light treatment,the germination rate of seeds at 10 and 30℃were only 0.The results showed that 10 and 30℃could not improve the germination rate of seeds,on the contrary,the inhibition of light was intensified.In the dark and 12 h light environment,the SOD activity of seeds at 10 and 30℃was significantly higher than that at 20℃in the late germination stage;Under each light environment,the POD and CAT content of seeds at 20℃were higher than that at 10 and 30℃,while the MDA content was lower than 10 and 30℃.It can be seen that Allium mongolicum seeds are typical dark seeds,and the suitable germination temperature is 20℃,high temperature and low temperature will limit the germination of seeds.

关 键 词：沙葱种子 光照 温度 抗氧化系统 萌发 

分 类 号：S633.9[农业科学—蔬菜学]