低温对寒地玉米种子萌发及幼苗抗氧化酶活性的影响  

Effects of Low Temperature on Seed Germination and Seedling Antioxidant Enzyme Activity of Maize(Zea mays L.) of Cold Region

作　　者：谷英楠[1] 杨克军[1] 王玉凤[1] 张翼飞[1] 赵长江[1] 付健[1] 赵莹[1] 刘承[1] 张发明[1] 杨系玲 刘慧迪[1] 刘瑀[1] 方永江[1] 

机构地区：[1]黑龙江八一农垦大学农学院/寒地作物种质改良与栽培重点实验室,黑龙江大庆163319

出　　处：《安徽农业科学》2014年第16期5092-5096,共5页Journal of Anhui Agricultural Sciences

基　　金：粮丰工程项目(2011BAD16B11-03);黑龙江省农垦总局科技攻关项目(HNK11A-03-02)

摘　　要：[目的]研究寒地不同玉米（Zea maysL.）品种萌发及幼苗生长和抗氧化酶活性对低温的响应特性.[方法]以14份寒地玉米品种为试材,在萌芽期及幼苗期对耐低温能力进行比较研究.[结果]在低温下（5 ～ 15℃）,随着温度降低参试品种的发芽率均呈下降趋势.低温胁迫下各玉米品种幼苗的超氧化物歧化酶（SOD）活性增加,其中,泽玉16、绥玉19的变化最明显;各玉米品种幼苗的过氧化物酶（POD）活性增强,其中,久龙2、南北4、泽玉16、绥玉19的变化最明显;南北4、哲单37、海玉5的相对生长速率最高.[结论]南北4、海玉5、哲单37为苗期耐低温型玉米品种;垦玉7、绥玉19、唐玉15、绥玉1、德美亚1、久龙2、蠡玉18为苗期中间型玉米品种;甘玉1、克单8、泽玉16、吉单522为苗期低温敏感型玉米品种.[Objective] The aim was to study the interaction characteristics of different maize cultivars seeds germination and seedlings growth and antioxidant enzyme activity in cold region.[Method] Using 14 cold maize cultivars of cold region for the test material,its resistance to cold was comparatively researched at germination and seedling stage.[Result] The germination rates of all maize cultivars declined with the temperature decreasing at the low temperatures（5-15 ℃）.At the low temperature stress,the SOD activity of seedlings of all maize cultivars enhanced,thereinto,the change of Zeyu 16 and Suiyu 19 were significant; their POD activities increased,thereinto,the change of Nanbei 4,Zeyu 16 and Suiyu t9 were significant; the relative growth rate of Nanbei 4,Zhedan 37 and Haiyu 5 were the highest.[Conclusion] Nanbei 4,Haiyu 5 and Zhedan 37 belongs to low temperature-resistant type maize cultivars at seedling stage; Kenyu 7,Suiyu 19,Tangyu 15,Suiyu 1,Demeiya 1,Jiulong 2 and Liyu 18 belongs to intermediate type maize cultivars at seedling stage; Ganyu 1,Kedan 8,Zeyu 16 and Jidan 522 belongs to cold-sensitive type maize cultivars at seedling stage.

关 键 词：玉米 低温胁迫 种子萌发 保护性酶 

分 类 号：S513[农业科学—作物学]