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首页> 外文期刊>Plant Protection Science >Differentiation of the disease caused by Aphanomyces cochlioides and girth scab on sugar beet roots – a review
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Differentiation of the disease caused by Aphanomyces cochlioides and girth scab on sugar beet roots – a review

机译：甜菜根上的Aphanomyces cochlioides和周长sc疮引起的疾病的鉴别-综述

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Severe symptoms of root rot on sugar beet have been observed in Poland and Germany since 2001. The symptom classification suggested girth scab as it was mistakenly classified on the basis of current classification, e.g. in LIZ. However, the cause of the disease was Aphanomyces cochlioides infection, not Streptomyces spp. According to these findings we cannot call the symptoms caused by A. cochlioides as ‘girth scab’. The typical scab (girth scab) symptoms can be promoted by A. cochlioides infections. In many cases, A. cochlioides developed at the beginning of the season, during the seedling stage. Its further development was due to rainfall and was not routinely recognised in disease-changed tissues if in the middle of the summer the rainfall level was reduced. According to the described findings, renewed description and differentiation of the girth scab symptoms caused by Streptomyces spp. and root rot caused by A. cochlioides on sugar beet roots are suggested. Typical symptoms of the disease caused by A. cochlioides occur mainly on the upper part of the root but can also occur on its lower part, if weather conditions are favourable for the pathogen. The coexistence of A. cochlioides and Pythium spp. in the same niches is also possible. Currently the illustrations showing these symptoms are included in the ‘girth scab’ descriptions.
机译：自2001年以来，在波兰和德国已观察到甜菜根腐病的严重症状。症状分类表明周长sc疮，因为它是根据当前分类错误地分类的，例如在LIZ。但是，该病的病因是球孢杆菌的感染，而不是链霉菌属。根据这些发现，我们不能将由A. cochlioides引起的症状称为“肚sc”。典型的sc疮（肚sc病）症状可由耳蜗曲霉感染引起。在许多情况下，cochlioides会在季节开始时，即在幼苗阶段发育。它的进一步发展是由于降雨造成的，如果在夏季中旬降低了降雨水平，则在疾病变化的组织中通常无法识别出它。根据描述的发现，重新描述和区分由链霉菌属引起的sc斑症状。以及由甜菜根上的拟南芥引起的根腐病。如果天气条件有利于病原体，则由co曲霉引起的典型疾病症状主要发生在根的上部，但也可能发生在根部的下部。 A.cochlioides和腐霉属的共存。在同一个领域中也是可能的。目前，显示这些症状的插图已包含在“肚sc”描述中。

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