辽宁省玉米镰孢穗腐病病原菌的鉴定与分布 |
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引用本文:肖淑芹,许佳宁,闫丽斌,隋韵涵,薛春生,陈捷.辽宁省玉米镰孢穗腐病病原菌的鉴定与分布.植物保护学报,2017,44(5):803-808 |
DOI:10.13802/j.cnki.zwbhxb.2017.2016056 |
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中文摘要:为明确辽宁省玉米镰孢穗腐病的病原菌种类及其分布特征,采用形态学与分子生物学鉴定方法,对2015年9月采自辽宁省13个地区的84份玉米穗腐病样品进行分离鉴定,同时依据镰孢菌分离频率确定其在辽宁省玉米生态区的分布特征。结果表明,从辽宁省84个玉米穗腐病样分离物中鉴定出3个种,即拟轮枝镰孢菌Fusarium verticillioides、禾谷镰孢菌F.graminearum和层出镰孢菌F.proliferatum,分别为67、9和8株,占79.77%、10.71%和9.52%。按照柯赫式法则,验证了3种镰孢菌代表菌株FV-39、FG-1和FP-2是玉米品种郑单958穗腐病的致病菌。拟轮枝镰孢菌为辽宁省玉米镰孢穗腐病的优势致病菌,广泛分布于辽东、辽南、辽中、辽北和辽西5个玉米生态区,分别占16.67%、11.90%、21.42%、10.72%和19.05%;禾谷镰孢菌主要分布于辽西地区,层出镰孢菌主要分布于辽中和辽北地区。 |
中文关键词:辽宁省 玉米穗腐病 镰孢菌 分布特征 |
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Identification and distribution of Fusarium species causing maize ear rot in Liaoning Province |
Author Name | Affiliation | E-mail | Xiao Shuqin | Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China | | Xu Jianing | Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China | | Yan Libin | Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China | | Sui Yunhan | Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China | | Xue Chunsheng | Department of Plant Protection, Shenyang Agricultural University, Shenyang 110866, Liaoning Province, China | cshxue@sina.com | Chen Jie | School of Agriculture & Biology, Shanghai JiaoTong University, Shanghai 200240, China | jiechen59@sjtu.edu.cn |
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Abstract:In order to understand the Fusarium species of maize ear rot in Liaoning Province, 84 kernel samples were collected from 13 regions in Liaoning Province in September of 2015, and were identified with morphology and species-specific molecular detection. The distribution characters of Fusarium species were clarified. The results showed that three species of Fusarium were identified from 84 isolates, including 67 isolates of F. verticillioides (79.77%), nine isolates of F. graminearum (10.71%) and eight isolates of F. proliferatum (9.52%). The pathogenicity of FV-39, FP-2 and FG-1 isolates was tested on maize variety Zhengdan 958 respectively according to Koch's Postulate. Fusarium verticillioide distributed in eastern, southern, central, northern and western ecological zones of Liaoning Province, isolates of frequency were 16.67%, 11.90%, 21.42%, 10.72% and 19.05%. Fusarium proliferatum distributed in western Liaoning, and F. graminearum in central and northern Liaoning. |
keywords:Liaoning Province maize ear rot Fusarium spp. distribution characters |
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