Breakdown of the Yr17 resistance to yellow rust of wheat in northern Europe
Breakdown of the Yr17 resistance to yellow rust of wheat in northern Europe
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DOI：
10.1051/agro:2000176
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发表时间：
2000-11-01
期刊：
影响因子：
--
通讯作者：
de Vallavieille-Pope, C
中科院分区：
文献类型：
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作者：
Bayles, RA;Flath, K;de Vallavieille-Pope, C
Yr 17基因是一个抗小麦条锈菌的基因。在20世纪70年代中期引入北方欧洲小麦栽培品种。直到1994年在英国和丹麦发现Yr 17的毒力才被发现。在这两个国家，易感Yr 17品种在未来四年内种植面积越来越大，随后相应的毒力频率上升至100%。在北方欧洲的其他地方，Yr 17品种在此期间以相对较小的规模种植。然而，1997年在法国和德国检测到Yr 17的毒力，到1999年达到超过70%的频率，表明病原体孢子从英国或丹麦流入。病原体孢子在北方欧洲各地的迁移在确定小麦条锈菌当地种群的毒力组成中起着重要作用。白藓至关重要的是，这应反映在国家毒力监测项目之间的合作中。
The gene Yr17, conferring resistance to Puccinia striiformis f. sp. tritici, was introduced into northern European wheat cultivars in the mid 1970s. Virulence for Yr17 was not detected until 1994, when it was identified in the UK and Denmark. In both countries, susceptible Yr17 cultivars were grown on an increasingly large area over the next four years and this was followed by a rise in the frequency of corresponding virulence to 100%. Elsewhere in northern Europe Yr17 cultivars were grown on a relatively small scale during this period. However, Virulence for Yr17 was detected in France and Germany in 1997 and reached a frequency in excess of 70% by 1999, suggesting an influx of pathogen spores from UK or Denmark. Migration of pathogen spores around northern Europe clearly plays an important role in determining the virulence composition of local populations of Puccinia striiformis f. sp. tritici. It is vital that this should be reflected in cooperation between national Virulence monitoring projects.