江西省番茄灰叶斑病病原菌鉴定及部分杀菌剂的防效
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江西省自然科学基金项目(20232BAB215036);江西省蔬菜产业技术体系资助项目(JXARS–06);江西师范大学研究生创新基金项目(YJS2023063)


Pathogen identification and control efficacy of selected fungicides on gray leaf spot of tomato(Solanum lycopersicum) in Jiangxi Provience
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    摘要:

    为明确江西省番茄灰叶斑病的病原,筛选合适的药剂防治该病害,本研究基于形态学观察、致病性测定及分子系统学方法对分离的病原菌进行鉴定,并测定19种杀菌剂对番茄灰叶斑病的田间防效。结果表明:分离得到的番茄灰叶斑病病原菌菌落正面呈黄色,背面呈黄褐色,分生孢子呈砖格状,有1~3个横隔膜,数个纵隔膜,结合致病性测定和ITS与GAPDH基因序列聚类结果,确定引起江西省番茄灰叶斑病的病原为番茄匍柄霉(Stemphylium lycopersici);65%代森锌可湿性粉剂对灰叶斑病防效最好,防效达71.35%,其次为75%百菌清可湿性粉剂,防效为68.77%,生产上可交替使用这2种杀菌剂,以延缓番茄灰叶斑病的抗药性。

    Abstract:

    To identify the causal agent of gray leaf spot on Solanum lycopersicum and to screen for effective control measures, the pathogen was characterized through morphological observation, pathogenicity test and phylogenetic analysis, and the field efficacy of 19 fungicides against this disease was evaluated. The results showed that the isolated pathogen formed colonies that were yellow on the obverse and yellowish-brown on the reverse. The conidia were brick-like, with 1-3 transverse and several longitudinal septa. Based on the pathogenicity tests, as well as phylogenetic analysis of the ITS and GAPDH gene sequences, the pathogen causing gray leaf spot of Solanum lycopersicum in Jiangxi Province was identified as Stemphylium lycopersici. 65% zineb wettable powder(WP) showed the best control efficacy against gray leaf spot of Solanum lycopersicum with an efficacy of 71.35%, followed by 75% chlorothalonil WP with an efficacy of 68.77%. These fungicides could be used alternately in production to delay the development of resistance in the pathogen causing gray leaf spot on Solanum lycopersicum.

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邹芬,熊正葵,王春庆,罗向东,马辉刚,何烈干*.江西省番茄灰叶斑病病原菌鉴定及部分杀菌剂的防效[J].湖南农业大学学报(自然科学版),2025,51(4):48-53.

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  • 在线发布日期: 2025-09-29
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