| 河南省小麦赤霉病菌种群组成及致病力分化 |
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| 引用本文： | 徐 飞,杨共强,王俊美,宋玉立,刘露露,张姣姣.河南省小麦赤霉病菌种群组成及致病力分化[J].植物病理学报,2016,46(3):294-303. |
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| 作者姓名： | 徐 飞 杨共强 王俊美 宋玉立 刘露露 张姣姣 |
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| 作者单位： | 河南省农业科学院植物保护研究所,农业部华北南部作物有害生物综合治理重点实验室,郑州 450002 |
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| 基金项目： | 公益性行业科研专项(201303016);“十二五”国家科技支撑计划(2011BAD16B07);河南省小麦产业技术体系(S2010-01-05) |
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| 摘 要： | 为明确河南省小麦赤霉病种群组成和致病力分化情况,2007—2014年对河南省15个市84个田块的327个小麦赤霉病菌进行种群鉴定、毒素化学型分析和致病力分化研究,结果表明:Fusarium graminearum s. str.和F. asiaticum是河南省小麦赤霉病的优势种群(97%),F. pseudograminearum(2.1%)、F. culmorum(0.3%)、F. equiseti(0.3%)、F. verticillioids(0.3%)为次要种群;对于禾谷镰刀菌复合群来说,豫北地区分布只有F. graminearum s. str.,豫中地区F. graminearum s. str.和F. asiaticum都存在,以F. graminearum s. str.为主,豫南地区F. graminearum s. str.和F. asiaticum都存在,以F. asiaticum为主;291个F. graminearum s. str.都为15ADON类型,26个F. asiaticum菌株中22个为3ADON,1个为15ADON,3个为NIV类型;F. graminearum s. str.(15ADON)也存在致病力分化,强、中、弱致病力的菌株在河南省的比例约为2:2:1。
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| 关 键 词： | 小麦 小麦赤霉病 禾谷镰刀菌复合群 毒素化学型 |
| 收稿时间： | 2015-03-17 |
Composition and variation in aggressiveness of Fusarium populations causing wheat head blight in Henan province |
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| XU Fei,YANG Gong-qiang,WANG Jun-mei,SONG Yu-li,LIU Lu-lu,ZHANG Jiao-jiao.Composition and variation in aggressiveness of Fusarium populations causing wheat head blight in Henan province[J].Acta Phytopathologica Sinica,2016,46(3):294-303. |
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| Authors: | XU Fei YANG Gong-qiang WANG Jun-mei SONG Yu-li LIU Lu-lu ZHANG Jiao-jiao |
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| Institution: | Institute of Plant Protection, Henan Academy of Agricultural Sciences;
Key Laboratory of Crop Integrated Pest Management of the Southern of North China, Ministry of Agriculture of the People’s Republic of China, Zhengzhou 450002, China |
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| Abstract: | For finding out the composition and aggressiveness variation in Fusarium populations causing wheat head blight in Henan province, three hundred and twenty-seven isolates of Fusarium spp. from diseased wheat spikes collected in 84 fields in 15 cities across Henan province during 2007 to 2014 were tested for species identification, deoxynivalenol chemotype and aggressiveness assay. The results indicated that F. graminearum s. str. and F. asiaticum (97%) are the main causal agents of Fusarium head blight in Henan province, whereas the remaining 2.1% of the isolates were identified as F. pseudograminearum, and F. culmorum, F. equiseti and F. verticillioids took up 0.3% of total samples, respectively. Among the isolates of F. graminearum species complex, F. graminearum s. str. isolates are prevalent in northern Henan province; F. graminearum s. str. and F. asiaticum were both distributed in its central and southern areas, and F. graminearum s. str. is a prevalent species in central Henan province, but F. asiaticum is prevalent in southern Henan province. All 291 F. graminearum s. str. isolates belong to the 15-acetyl deoxynivalenol type (15ADON), among the 26 F. asiaticum isolates, 22 isolates were of the 3-acetyl deoxynivalenol type (3ADON) while 3 isolates were the nivalenol (NIV) type and only 1 isolate was of 15-acetyl deoxynivalenol type. According to virulence tests, F. graminearum s. str. (15ADON) isolates were divided into three kinds of virulence groups (weak, moderate and strong virulence), the members in each group are 48 ,93 and 90 respectively. The ratio of them was approximately 1:2:2. |
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| Keywords: | Triticum aestivum Fusarium head blight (FHB) F graminearum species complex deoxynivalenol type |
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