摘要
为明确植物免疫诱抗剂联合生物农药对烟草青枯病的防控可行性和防治效果,以及为缓解烟草青枯病的发生提供实践基础,本研究以“云烟87”为研究对象,研究不同浓度的S-诱抗素诱导烟草对青枯病菌抗性及联合中生菌素对烟草青枯病的田间防效和烤烟农艺性状的影响.室内盆栽结果表明,1.63~26.00 mg/L S-诱抗素诱导抗病性差异较大,其中1.63~6.50 mg/L和26.00 mg/L的S诱抗素有利于青枯病发生,而13.00 mg/L可有效缓解烟草青枯病的发生.田间试验结果表明,S-诱素与中生菌素联用能够促进烤烟生长,其中,株高、茎围、最大叶长和最大叶面积等农艺性状与清水对照比较,差异具有统计学意义.此外,13.00 mg/L S-诱抗素与1.33 mg/L中生菌素联用可有效缓解烟草青枯病的发生,不同时期的增效系数CEC值均表现为相加作用,而且在发病初期(7月8日)和发病后期(8月5日)防治效果分别可达到92.05%,59.87%.因此,田间S-诱抗素与中生菌素联用有望用于缓解烟草青枯病的发生以及提升烟草的农艺性状.
To clarify the control feasibility and effect of plant immune inducers combined with bio-pesticides against tobacco bacterial wilt(Ralstonia solanacearu), and provide a practical basis for alleviating the occurrence of tobacco bacterial wilt. Taking ‘Yunyan 87’ cultivar as the research object, the effects of different concentrations of S-Abscisic acid on the disease resistance of flue-cured tobacco and the effect of combined with Zhongshengmycin on control of tobacco bacterial wilt in the field and agronomic traits of flue-cured tobacco were studied. The results of indoor pot experiment showed that there were great differences on disease resistance induced by 1.63~26.00 mg/L S-Abscisic acid, among which 1.63~6.50 mg/L and 26.00 mg/L of S-Abscisic acid were beneficial to the occurrence of bacterial wilt, while the 13.00 mg/L of S-Abscisic acid effectively alleviated the occurrence of tobacco bacterial wilt. The results of field experiments showed that the combination of S-Abscisic acid and Zhongshengmycin could promote the growth of flue-cured tobacco. The agronomic characters such as plant height, stem circumference, maximum leaf length and maximum leaf area were significantly higher than those of the clear water control. In addition, the combination of 13.00 mg/L S-Abscisic acid and 1.33 mg/L zhongshengmycin could effectively alleviate the occurrence of tobacco bacterial wilt. In the early stage(July 8 th) and late stage(August 5 th) of infection, the control effect could reach 92.05% and 59.87%, respectively. Therefore, the combination of S-Abscisic acid and zhongshengmycin will be expected to alleviate the occurrence of tobacco bacterial wilt in the field and improve the agronomic traits of tobacco.
作者
王垚
李昆鸿
巢进
王定强
张承
滕凯
田明慧
毛辉
周郑雄
WANG Yao;LI Kunhong;CHAO Jin;WANG Dingqiang;ZHANG Cheng;TENG Kai;TIAN Minghui;MAO Hui;ZHOU Zhengxiong(School of Plant Protection,Southwest University,Chongqing 400715,China;Xiangxi Prefecture Branch of Hunan Tobacco Company,Jishou Hunan 416000,China;Tongzi Branch of Zunyi Company of Guizhou Tobacco Company,Zunyi Guizhou 563200,China)
出处
《植物医学》
2022年第3期47-53,共7页
Plant Health and Medicine
基金
中国烟草总公司贵州省公司揭榜挂帅项目(2022520000240150)
湖南省烟草公司湘西州公司项目(2020433100200183)
国家烟草专卖局绿色防控重大专项(110202101047LS-07)。
关键词
烟草青枯病
S-诱抗素
中生菌素
防治效果
tobacco bacterial wilt
S-Abscisic acid
Zhongshengmycin
control effect
