| 内蒙古中部地区苜蓿根腐病病原研究 |
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| 引用本文： | 曹丽霞,赵存虎,白全江,邵志壮.内蒙古中部地区苜蓿根腐病病原研究[J].华北农学报,2008,23(6). |
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| 作者姓名： | 曹丽霞 赵存虎 白全江 邵志壮 |
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| 作者单位： | 1. 内蒙古农牧业科学院,植物保护研究所,内蒙古,呼和浩特,010031
2. 内蒙古农牧业科学院,玉米中心,内蒙古,呼和浩特,010031 |
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| 基金项目： | This work was funded by Inner Mongolia Natural Scientific Foundation (200508010314) |
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| 摘 要： | 为了查明内蒙古中部地区苜蓿根腐病的主要致病菌，按照柯赫氏法则对呼和浩特地区感染苜蓿根腐病的317个样品进行病原物分离鉴定。结果表明：呼和浩特地区的苜蓿根腐病是由多种病原菌混合侵染所致，从发病部位分离到的菌株以镰孢霉（Fusarium spp．）为优势病原，经致病性测定和接种试验证明，茄病镰刀菌（F．solani）致病性最强，接种后发病率达90．0％，其次是尖孢镰刀菌（F．oxysporum）和黄色镰刀菌（F．culmorum），发病率分别为61．7％和81．7％。茄病镰刀菌是苜蓿根腐病的主要病原菌，与黄色镰刀菌或尖孢镰刀菌复合侵染后，发病率高于黄色镰刀菌或尖孢镰刀菌单独接种的发病率。
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| 关 键 词： | 苜蓿 根腐病 茄病镰刀菌 黄色镰刀菌 尖孢镰刀菌 |
Identification of the Pathogens Causing Root Rot of Alfalfa in Inner Mongolia |
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| CAO Li-xia,ZHAO Cun-hu,BAI Quan-jiang,SHAO Zhi-zhuang.Identification of the Pathogens Causing Root Rot of Alfalfa in Inner Mongolia[J].Acta Agriculturae Boreali-Sinica,2008,23(6). |
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| Authors: | CAO Li-xia ZHAO Cun-hu BAI Quan-jiang SHAO Zhi-zhuang |
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| Abstract: | To identify the major pathogen,317 alfalfa root rot isolates sampled from Huhhot,Inner Mongolia of China,were determined.The results showed that:root rot of alfalfa was caused by several pathogens,where predominant pathogen was Fusarium spp.Pathogenicity analysis indicated that F.solani had the strongest virulence with infected rate of 90.0%,whereas infected rate of F.culmorum and F.oxysporum was 81.7% and 61.7%,respectively.When F.solani was co-inoculated with other isolated pathogens,the infected rate of ... |
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| Keywords: | Medicago sativa Root rot F solani F culmorum F oxysporum |
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