| 中国玉米大斑病菌生理分化及新命名法的初步研究 |
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| 引用本文： | 刘国胜,董金泉.中国玉米大斑病菌生理分化及新命名法的初步研究[J].植物病理学报,1996,26(4):305-310. |
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| 作者姓名： | 刘国胜 董金泉 |
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| 作者单位： | 河北农业大学植保系, 保定 071001 |
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| 摘 要： | 在分别含Ht1、Ht2、Ht3和HtN的单基因玉米鉴别寄主上测定了全国玉米各产区的百余份大斑病菌标样。结果表明,按传统方法命名的1号(或称0号)生理小种仍然是优势小种,占供试菌株的73.0%;2号(1号)生理小种占1.9%。虽然未出现已报道的3号(23号)、4号(23N号)和5号(2N号)小种,但特别值得注意的是出现了25.1%的未定名的新类群。为克服传统命名方法的局限性及指导抗病育种及品种布局,本文初步提出用毒力频率法分析玉米大斑病菌的生理分化状况,并进一步指明了不同致病类群在我国的分布频率及Ht基因的可用范围。
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| 关 键 词： | 玉米大斑病菌 生理小种 毒性频率 Ht基因 命名法 |
PRELIM IN ARY STUDY ON PHY SIOLOGIC SPECIALIZATION AND NEW NOM ENCLA TURE FOR EXSERO HILUM TURCICUM OF CORN IN CHINA |
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| Liu Guosheng,Dong Jingao,Deng Fuyiu,Guo Aiguo,Zhang Fengguo,Zang Manhui.PRELIM IN ARY STUDY ON PHY SIOLOGIC SPECIALIZATION AND NEW NOM ENCLA TURE FOR EXSERO HILUM TURCICUM OF CORN IN CHINA[J].Acta Phytopathologica Sinica,1996,26(4):305-310. |
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| Authors: | Liu Guosheng Dong Jingao Deng Fuyiu Guo Aiguo Zhang Fengguo Zang Manhui |
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| Institution: | Dept. of Plant Protection, Hebei Agricultural University, Baoding 071001 |
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| Abstract: | More than 100 isolates of Exserohilum turcicum collected from different provinces of China in 1991 and 1992 were identified with eight kinds of corn inbred seedlings of dominant resistance gene Ht1, Ht2, Ht3 and HtN respectively under controlled greenhouse conditions. The results showed that, according to traditional nomenclature of virulence formulae, physiologic race 1(or 0) was still predominant and amounted to 73.0%; race 2(or 1) amounted to 1.9%. |
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| Keywords: | Exserohilum turcicum Physiologic race Virulence frequency Ht genes Nomenclature |
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