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大蒜干腐病病原菌的分离鉴定
引用本文:李旭双,陈典,梁誉,王勇. 大蒜干腐病病原菌的分离鉴定[J]. 中国蔬菜, 2012, 1(20): 88-93
作者姓名:李旭双  陈典  梁誉  王勇
作者单位:东北农业大学园艺学院,黑龙江哈尔滨 150030
基金项目:公益性行业(农业)科研专项(200903018-6)
摘    要:以感病的大蒜品系Z-1001鳞茎为材料,经病原菌分离与单孢纯化,获得F、J、H、G 4种纯化菌株。依据病原菌致病性测定,证实F菌株、J菌株为大蒜干腐病主要致病菌株。采用病原菌形态学观察并结合rDNA ITS序列分析,鉴定F菌株为尖孢镰刀菌(Fusarium oxysporum Schlecht),J菌株为层生镰刀菌〔Fusarium proliferatum(Matsush.)Nirenberg〕,说明尖孢镰刀菌(F.?oxysporum Schlecht)和层生镰刀菌〔F.?proliferatum(Matsush.)Nirenberg〕是大蒜干腐病的主要致病菌。

关 键 词:大蒜干腐病  尖孢镰刀菌  层生镰刀菌  形态学  rDNA ITS序列  

Isolation and Identification of Garlic Dry Rot Disease Pathogen
LI Xu-shuang , CHEN Dian , LIANG Yu , WANG Yong. Isolation and Identification of Garlic Dry Rot Disease Pathogen[J]. China Vegetables, 2012, 1(20): 88-93
Authors:LI Xu-shuang    CHEN Dian    LIANG Yu    WANG Yong
Affiliation:College of Horticulture,Northeast Agricultural University,Harbin 150030,Heilongjiang,China
Abstract:In order to study the pathogens of garlic dry rot disease,this study used the susceptible garlic(Allium sativum L.)strain Z-1001 for pathogen isolation,single-spore purification and pathogenicity determination.The results revealed that the F strain and J strain were main garlic dry rot pathogenic strains.The results of pathogen morphology observation and rDNA ITS sequence analysis showed that F strain was Fusarium oxysporum Schlecht,while J strain was Fusarium proliferatum(Matsush.)Nirenberg,which in turn revealed that F. oxysporum Schlecht and F. proliferatum(Matsush.)Nirenberg were the main pathogens of garlic dry rot disease.
Keywords:Garlic dry rot disease  Fusarium oxysporum Schlecht  Fusarium proliferatum (Matsush.)Nirenberg  Morphology  rDNA ITS sequence
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