SHI Feng-mei,MA Li-gong.Study on Physiological Race Differentiation of Exserohilum turcicum in Heilongjiang Province[J].HEILONGJIANG AGRICULTURAL SCIENCES,2013,(02):63-65.
黑龙江省玉米大斑病菌小种生理分化的研究
- Title:
- Study on Physiological Race Differentiation of Exserohilum turcicum in Heilongjiang Province
- 文章编号:
- 1002-2767(2013)02-0063-03
- Keywords:
- maize; Setosphaeria turcica; physiological race
- 分类号:
- S435.131
- 文献标志码:
- A
- 摘要:
- 为明确黑龙江省不同玉米种植区域大斑病菌生理小种组成、频率及变化趋势,进而应用抗性品种进行生态学防治病,采用常规鉴别寄主鉴定技术,对采自2009年和2010年黑龙江省的45份玉米大斑病病菌菌株的生理小种进行分化。结果表明:在供试菌株中鉴定出0、1、2、12、13和23N共6个生理小种。0号和1号生理小种所占比例最高,分别为35.72%和31.25%,并在黑龙江省各地广泛存在,因此0号和1号生理小种是黑龙江省玉米大斑病菌的优势小种。表明黑龙江省玉米大斑病菌生理分化呈现复杂化,并不断有新小种出现。
- Abstract:
- In order to make clear the constitute,frequency and change trend of physiological race ofExserohilum turcicum in different maize planting area of Heilongjiang province and then using resistant varieties to control disease ecologically,the differential hosts 45 isolates of Exserohihun turcicum,collected from Heilongjiang province in 2009 and 2010,were identified in pathogenic variation to different Ht resistance gene.The results showed that 6 physiological races including 0,1,2,12,13,23N were found.Races 0 and 1 with occurrence frequency of 35.72% and 31.25% were higher,and the species widely distributed in Heilongjiang province,they were dominant races of Exserohilum turcicum in Heilongjiang province.It indicated that the differentiation of physiological race had presented the complication and new races were found frequently.
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备注/Memo
收稿日期:2012-05-13