| 河南省玉米茎腐病病原菌分离与致病性测定 |
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| 引用本文： | 袁虹霞,闵营辉,张丹丹,邢小萍,李洪连,雷彩艳.河南省玉米茎腐病病原菌分离与致病性测定[J].玉米科学,2011,19(6):122-124. |
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| 作者姓名： | 袁虹霞 闵营辉 张丹丹 邢小萍 李洪连 雷彩艳 |
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| 作者单位： | 河南农业大学植物保护学院,郑州,450002 |
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| 基金项目： | 河南省重大公益性科研招标项目( 081100911300) |
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| 摘 要： | 连续两年从河南省主要玉米产区采集玉米茎腐病病害标本进行分离,对病原菌的种类和致病性进行鉴定与测定。结果表明,河南省玉米茎腐病的病原菌为禾谷镰孢(Fusarium graminearumSchwabe)、轮枝镰孢(F.verticillioides)和腐霉菌(Pythiumsp.),其中,禾谷镰孢的分离频率最高,平均分离频率为43.12%;轮枝镰孢次之,平均分离频率为23.13%;腐霉菌的分离频率较低,平均分离频率为6.25%。禾谷镰孢的致病性最强,腐霉菌次之,轮枝镰孢的致病性最弱。禾谷镰孢是河南省玉米茎腐病最主要的病原菌。
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| 关 键 词： | 玉米茎腐病 病原菌 致病性 禾谷镰孢 |
| 收稿时间： | 3/9/2011 12:00:00 AM |
Isolation and Pathogenicity Determination of Pathogen for Corn Stalk Rot in Henan Province |
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| YUAN Hong-xi,MIN Ying-hui,ZHANG Dan-dan,et al..Isolation and Pathogenicity Determination of Pathogen for Corn Stalk Rot in Henan Province[J].Journal of Maize Sciences,2011,19(6):122-124. |
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| Authors: | YUAN Hong-xi MIN Ying-hui ZHANG Dan-dan |
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| Institution: | YUAN Hong-xia,MIN Ying-hui,ZHANG Dan-dan,et al.(College of Plant Protection,Henan Agricultural University,Zhengzhou 450002,China) |
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| Abstract: | The pathogens of corn stalk rot were defined by using isolation, identification and pathogenicity determination in Henan province. The results revealed that the pathogens were Fusarium graminearum, F. verticillioides and Pythium sp., in which, the isolation frequency arrived 43.12% for F. graminearum, following by F. verticillioides and Pythium sp., with 23.13% and 6.25% isolation frequency, respectively. The pathogenicity analysis indicated that F. graminearum had the strongest pathogenicity, following by Pythium sp. and F. verticillioides. In short, F. graminearum was the most important pathogen of corn stalk rot in Henan province. |
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