作　　者： ; ;

机构地区： 仲恺农业技术学院

出　　处： 《仲恺农业工程学院学报》 1992年第1期24-27,共4页

摘　　要： 广州、东莞的韭黄烂叶病是由三种真菌引起,每年4—5月发生疫病(Phytophthora nicotianae Bredavar.parasitica(Dast.)Waterh.),6—7月发生白绢病(Sclerotium rolfsis Sacc.)和基腐病(Rhizoctonia solani Kuehn),7—10月只发生白绢病。 根据病原菌的形态,培养性状,寄生范围及交配型试验,疫霉菌被鉴定为烟草疫霉菌寄生变种交配型Al(Phytophthora nicotianae Breda var.parasitica(Dast.)Waterh.mating type Al)。 The leaf rot hotbed chives in Guangzhou and Dong Guan County was found to be caused by three fungi. Those occurred during April to May each year were Phytophthora blight(Phytophthora nicotianae Breda var. parasitica (Dast. )Waterh). Those occurred during June to July were a complex of southern blight (Sclerotium rolfsii Sacc. )and basal rot(Rhizoctonia solani Kuehn) ,and those occurred during July to October were southern blight alone. According to the morphology, cultural characters,host range and the matingtype experiment. the species of Phytophthora has been identified as Phytophthora nicotianae Breda var. parasitica (Dast. ) Watern. mating type A1.

关 键 词： 韭黄 交配型 烟草疫霉菌寄生变种 小核茵 丝核菌

领　　域： [农业科学]