本研究对2015年收集的春玉米区玉米穗腐病样本的病原菌进行了分离鉴定。结果表明,禾谷镰孢复合种(Fusarium graminearum species complex)的总分离频率最高,为35.90%,为优势菌。进一步分析显示,山西、河北、吉林和黑龙江省以禾谷镰孢复合种为主,分离频率分别为81.25%、75.00%、44.00%和44.44%;内蒙古以拟轮枝镰孢菌(F.verticillioides)为主,分离频率为56.25%;辽宁省拟轮枝镰孢菌和哈茨木霉(Trichoderma harzianum)的分离频率分别为34.48%和31.03%;而在陕西省,禾谷镰孢复合种、拟轮枝镰孢菌和亚粘团镰孢菌(F.subglutinans)分离频率均为28.57%。以禾谷镰孢复合种的EF-1α基因序列为基础构建系统发生树,进一步对分离到的禾谷镰孢复合种进行亚种鉴定。结果表明,春玉米区禾谷镰孢复合种为禾谷镰孢菌和布氏镰孢菌,且以布氏镰孢菌为主。
【英文摘要】
In this study,isolation and identification of the pathogens causing maize ear rot were conducted from the samples collected from spring maize regions in 2015.The results demonstrated that Fusarium graminearum species complex in which most of them from Shanxi,Hebei,Jilin and Heilongjiang accounting for 81.25%,75.00%,44.00% and 44.44%,respectively,predominated in this region with the total isolation frequency of35.90%.In addition,F. verticillioides was the dominant species in Inner Mongolia with arate of 56.2...
【基金】
现代农业产业技术体系(CARS-02);
国家自然科学基金青年科学基金项目(31601590)
【更新日期】
2018-03-13
【分类号】
S435.131
【正文快照】
Composition and distribution of pathogens causing ear rot in spring maize regionand identification of Fusarium graminearum species complex SUN Hua,ZHANGHai-jian,MA Hong-xia,SHI Jie,GUO Ning,CHEN Dan,LI Po(Plant Protection Institute,Hebei Academy ofAgricul
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