不同剪叶次数对“K326”烟株生长及抗性的影响  

Effects of Different Leaf Clipping Times on Growth and Resistance of‘K326’Tobacco Plant

作　　者：陈天才 王琴 王克 金亚波[3] 朱鑫 陈伦飞 尹朝先 李承荣 耿红梅 吴勤政 王振国 孙现超[2] CHEN Tiancai;WANG Qin;WANG Ke;JIN Yabo;ZHU Xin;CHEN Lunfei;YIN Chaoxian;LI Chengrong;GENG Hongmei;WU Qinzheng;WANG Zhenguo;SUN Xianchao(Fengjie Branch of Chongqing Tobacco Company,Chongqing 404600,China;College of Plant Protection,Southwest University,Chongqing 400715,China;China Tobacco Guangxi Industry Corporation Limited,Nanning 530001,China)

机构地区：[1]中国烟草总公司重庆市公司奉节分公司,重庆404600 [2]西南大学植物保护学院,重庆400715 [3]广西中烟工业有限责任公司,南宁530001

出　　处：《植物医学》2023年第1期57-66,共10页Plant Health and Medicine

基　　金：中国烟草总公司重庆市公司科技项目(B20211NY1309,A20201NY01-1307,A20201NY02-1306,B20211-NY1315);广西中烟工业有限责任公司项目(2021450000340029)。

摘　　要：为了探究重庆市烟区不同烟苗剪叶次数对移栽前烟苗的影响,以及移栽后对烟株生长和抗性的影响,本研究以烤烟品种“K326”为材料,开展了不同剪叶次数对烟叶后期生长和抗性的影响分析.室内及田间试验结果表明,剪叶处理能够激活烟苗的植物超氧化物歧化酶(SOD)和过氧化物酶(POD)活性,使抗性相关基因ERF,GST,Oxidea和Pr1上调表达,并且在苗期能够促进根长、干物质的积累和减少烟草赤星病、烟草野火病的发生,当剪叶次数为2次时,效果最为显著,因此在生产上剪叶2次,其经济效益最佳.In order to explore the effects of different leaf clipping times on tobacco seedlings before transplanting and the effects on the growth and resistance of tobacco plants after transplanting in Chongqing area,this study took flue-cured tobacco variety‘K326’as the material to carry out the analysis of different leaf clipping times on the growth and resistance of tobacco leaves at later growing stage.The results of laboratory and field experiments showed that leaf clipping treatment could activate SOD and POD activities of tobacco seedlings,up-regulate the expression of resistant genes ERF,GST,Oxidea and Pr1,and promote root length,dry matter accumulation and reduce the occurrence of red spot disease,wildfire disease at seedling stage.The effect was most significant with two times leaf clipping.Therefore,the economic benefit of cutting leaves twice in production is the best.

关 键 词：K326 剪叶次数 生长 抗性基因 影响 

分 类 号：S572[农业科学—烟草工业]