东北地区小麦赤霉病致病镰孢菌种类鉴定

来源 :中国植物病理学会2014年学术年会 | 被引量 : 0次 | 上传用户:guohui413
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  小麦赤霉病是一种世界性的流行病害,在我国的危害范围也越来越大.在黑龙江、呼伦贝尔、吉林、沈阳、通辽、河南等地区小麦种植区采集小麦赤霉病的病穗,经组织分离法分离病原菌,单孢纯化后获得镰孢菌90株.通过病原菌传统形态学鉴定和EF-1α序列分析,90株镰孢菌鉴定为6个种:禾谷镰孢菌Fusarium graminearum为优势种,有47株,约占52.2%;藤仓镰孢菌Fusarium fujikuroi有15株,约占16.7%;木贼镰孢菌Fusarium equisetum、接骨木镰孢菌Fusarium elderberry、轮枝镰孢菌Fusarium verticillium、层生镰孢菌Fusariu proliferatum为弱势种,分别占11.1%、11.1%、5.5%、3.3%.
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