香料烟黑胫病病原鉴定及防治药剂筛选  

Identification of black shank pathogen and fungicide selection in oriental tobacco

作　　者：唐旭兵[1] 李光西[1] 宋玉川[1] 屈生彬[1] 兰应海[1] 付嵘[2] 杨艳丽[2] 

机构地区：[1]云南烟草保山香料烟有限责任公司,云南保山市建设路174号678000 [2]云南农业大学植物保护学院,昆明黑龙潭650201

出　　处：《中国烟草学报》2010年第2期66-69,共4页Acta Tabacaria Sinica

摘　　要：对保山香料烟田间病害调查发现,黑胫病在苗期的发生较为普遍,病株根、茎部近地面处发生黑色斑,易引起猝倒。通过分离、纯化及利用柯赫氏法则对病原物进行鉴定,并通过抑菌圈试验对7种常用杀菌剂的抑菌药效进行选择。结果表明:香料烟黑胫病的病原为Phytophtora parasitica var.nicotianae;80%大生、25%甲霜灵、45%薯瘟消和60%防除剂对病原物无明显抑制作用,53%雷多米尔、银法利和25%烯酰吗啉对病原物有明显抑制作用,且25%烯酰吗啉与银法利的室内毒力强于53%雷多米尔。Field disease investigation in oriental tobacco in Baoshan found that the occurrence of black shank was more common when roots and stems were damaged.Pathogen was then separated and used to infecte healthy tobacco plants.Results showed that Phytophtora parasitica var.nicotianae(Breda de Haan)Tucker can cause disease.Seven fungicides were used to determine toxicity to P.parasitica.Results showed that Infinito SC and 25% Dimethomorph WP were more effective than 53% Ridomil WG and other 4 fungicides tested.

关 键 词：香料烟 病原鉴定 黑胫病 药剂筛选 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]