| 小麦白粉菌的联合致病性分析 |
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| 引用本文： | 王锡锋,何家泌. 小麦白粉菌的联合致病性分析[J]. 植物病理学报, 1988, 18(2): 107-111 |
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| 作者姓名： | 王锡锋 何家泌 |
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| 作者单位： | 河南省农业科学院植保所 |
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| 摘 要： | 根据传统应用的生理小种研究方法存在着因鉴别品数的不同及其数目的改变而引起小种命名的混乱;同小种不同菌株致病性不同及有限的鉴别寄主不能及时区分出危险性小种等问题,本文改用病菌群体对品种的毒力频率和联合致病性方法,用河南各地的90个小麦白粉菌株分别接种9个已知抗性基因的品系和8个推广或区试品种所得到的侵染型资料,分别计算菌株群体对各对品种的联合致病性系数和联合毒性系数.结果表明本省小麦白粉菌群体中的V1和V3c、V1和V5及V3b和V3C等毒性基因是联合的;花培28和周80—48及周80—48和郑州831等品种组合搭配种植可有效地控制小麦白粉病.因此这套方法对生产和抗病育种的作用是直接的.文中提出应根据研究对象和研究目的不同,选择适当的研究方法,以提高病原物致病性研究结果的有用性.
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PATHOGENICITY ASSOCIATION IN ERYSIPHE GRAMINIS F.SP.TRITICI |
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| Wang Xifeng,He Jiabi. PATHOGENICITY ASSOCIATION IN ERYSIPHE GRAMINIS F.SP.TRITICI[J]. Acta Phytopathologica Sinica, 1988, 18(2): 107-111 |
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| Authors: | Wang Xifeng He Jiabi |
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| Affiliation: | Institute of Plant Protection, Henan Academy of Agricultural Sciences |
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| Abstract: | Pathogenicity of population of Erysiphe graminis f.sp,tritici in Henan Province was analysed by calculating virulence frequencies to single lines and by analysing association of pathogenicity and association of virulence to ten combinations of two lines within a set of nine wheat lines,each with a different resistant gene to Erysiphe graminis f.sp.tritici.Combinations of wheat varieties which have high PAC and low VAC can be effectively used for controlling powdery mildew of wheat.The combination of Huapei 28 and Zhou 80-48 or Zhou 80-48 and Zhengzhou 831 are good enough for controlling this disease.How to improve the method of study so as to better the use of the data obtained from pathogenicity survey was disscussed. |
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