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首页> 外文期刊>Plant Pathology >Monitoring potato seed lots to control blackleg in fields in Switzerland and southern Germany
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Monitoring potato seed lots to control blackleg in fields in Switzerland and southern Germany

机译：监测马铃薯种子批次控制瑞士和德国南部的Blackleg

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Potato blackleg is a seedborne disease that can cause significant economic losses for growers. Disease development depends mainly on two drivers, namely seed inoculum and local climatic conditions. To better establish the relationship between these two drivers, blackleg development was monitored in Swiss field trials at multiple locations from 2010 to 2013 involving three sets of naturally infected seed lots planted in each of three locations. The seed lot itself was thereby the most important factor explaining differences in disease development, rather than environmental factors. In a further on-farm project conducted at various locations in Switzerland and southern Germany from 2013 to 2015, the implementation of a seed-testing procedure was investigated. A total of 177 seed lots were tested for natural latent infection with soft rotPectobacteriaceaeand the corresponding blackleg incidence was tracked in 242 fields. The reliability of the relationship between latent infection and field incidence was found to be strongly linked to the bacterial species.Dickeyaspp. field infection could be predicted with an acceptable reliability, whereasPectobacterium carotovorumsubsp.brasiliense, even when detected as latent tuber infection, was not consistently expressed as visual blackleg. Moreover, commonly found mixed latent infections with several bacterial species made it even harder to predict which bacteria would cause blackleg symptoms. Finally, variability in the reliability of seed testing may also be explained by differences in local farming practices. These trials over several years with naturally infected potato seed highlight the usefulness and limits of seed testing to manage blackleg.
机译：马铃薯Blackleg是一种种皮疾病，可对种植者造成显着的经济损失。疾病发展主要取决于两个司机，即种子接种物和局部气候条件。为了更好地建立这两个驱动因素之间的关系，在2010年至2013年的多个地点的瑞士现场试验中监测Blackleg开发，涉及三组种植在三个地区的每种天然感染的种植批次。因此，种子批本身是最重要的因素解释疾病发展差异，而不是环境因素。在2013年至2013年在瑞士和德国南部的各个地点进行的另一个农场项目中，研究了种子测试程序的实施。对于具有软转子易感染的天然潜入感染，共有177种种子批次测试了相应的Blackleg发病率在242个田地中被跟踪。发现潜在感染与现场发病率之间的关系的可靠性与细菌种类有关.DicKeyAspp。可以通过可接受的可靠性来预测田间感染，而Carotovorumsubsp.Brasiliense，即使被检测为潜在块茎感染，也不始终表达为Visual Blackleg。此外，通常发现具有几种细菌物种的混合潜入感染使其更难以预测哪种细菌会导致Blackleg症状。最后，还可以通过当地农业实践的差异来解释种子测试可靠性的可变性。这些试验在几年内具有天然感染的马铃薯种子突出了种子测试的有用性和限制来管理Blackleg。

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