诱导烟草抗灰霉病的茉莉酸甲酯有效浓度筛选  

Effective Concentration Screening of Methyl Jasmonate against Grey Mould of Tobacco

作　　者：李林倩 余朝阳 陈业 张秀榆 孔琼[1] 袁盛勇[1] 薛春丽[1] 陶宏征[1] LI Lin-qian;YU Chao-yang;CHEN Ye;ZHANG Xiu-yu;KONG Qiong;YUAN Sheng-yong;XUE Chun-li;TAO Hong-zheng(Honghe University/Key Laboratory for Research and Utilization of Characteristic Biological Resources in Southern Yunnan,Mengzi 661199,China)

机构地区：[1]红河学院/云南省高校滇南特色生物资源研究与利用重点实验室,云南蒙自661199

出　　处：《红河学院学报》2021年第2期146-148,共3页Journal of Honghe University

基　　金：红河学院博士启动项目(14bs14);云南省地方本科高校基础研究联合专项资金项目(202001BA070001-157);红河学院大学生创新创业训练计划项目(DCXL181098);国家自然科学基金(31260062);红河学院生物学重点建设学科资助。

摘　　要：为田间烟草灰霉病的防治提供理论数据,本文以烟草BY-2为材料,通过室内平板和盆栽试验,筛选出对烟草灰霉病具有较好诱导效果的茉莉酸酸甲酯有效浓度。结果表明,茉莉酸酸甲酯(MeJA)对烟草灰霉病病原灰葡萄孢无明显抑制作用。当MeJA浓度为0.01-1.00 mM时,外源喷施能有效降低烟草灰霉病的病情指数,且于0.10 mM MeJA处理下,烟草灰霉病病情指数最低达30.55±3.88,诱抗效果最好为(52.29±3.13)%,且喷施后4 d左右到达最佳诱导期,持久期可达8 d。In order to provide theoretical data for prevention of tobacco gray mold in field,the optimal concentration of methyl jasmonate was screened through indoors plate and potted experiments,and tobacco By-2 as materials.The results showed that MeJA had no inhibitory effect on Botrytis cinerea of grey mold,the disease index of tobacco gray mold would be low with exogenous MeJA of 0.01-1.00 mM spraying.The disease index was lowest for(30.55±3.88)and best resistance effect for(52.29±3.13)%in 0.10 mM MeJA,and the optimal induction period was reached in 4th day after spraying,the duration was up to 8 days.

关 键 词：烟草灰霉病 茉莉酸甲酯 诱抗 有效浓度 

分 类 号：Q945.8[农业科学—植物病理学] S572[生物学—植物学]