香料烟黑胫病病原鉴定及防治药剂筛选
Acta Tabacaria Sinica(2010)
Abstract
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。
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Key words
tobacco black shank,oriental tobacco,fungicides,P.parasitica
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