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Sirococcus-Krebs der Walnuss - eine Gefahr fuer den europaeischen Walnussanbau?

机译:核桃铁球菌癌-对欧洲核桃种植的威胁?

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摘要

Since its introduction to North America approximately 45 years ago, the fungus causing butternut canker, Sirococcus clavigig-nenti-juglandacearum Nair, Kostichka & Kuntz (Deuteromyco-tina, Coelomycetes), has led to the extensive destruction of Butternut (Juglans cinerea L.) in its native host range. The fungus causes perennial branch and trunk cankers which can completely encircle the cambium and kill the host. It is one of the few tree pathogens which can spread via infected seeds. Sirococcus cla-vigignenti-juglandacearum is not present in Europe yet, but the Walnut species cultivated here, Juglans regia L. and J. nigra L, are also susceptible and would be seriously endangered should the fungus be introduced. The article presents extensive information from literature on the disease, its symptoms, diagnostic characteristics, the history of its spread in North America, possible control measures and on the European, especially German, aspects of Walnut cultivation.
机译:自大约45年前被引入北美以来,引起胡桃can病的真菌,克氏菌Sirococcus clavigig-nenti-juglandacearum Nair,Kostichka和Kuntz(Deuteromyco-tina,Coelomycetes)已导致胡桃(Juglans cinerea L.)的广泛破坏。在其本地主机范围内。真菌引起多年生的分支和树干溃疡,它们可以完全包围形成层并杀死宿主。它是少数可以通过感染种子传播的树木病原体之一。欧洲尚不存在clarocvigignenti-juglandacearum球菌,但是这里种植的核桃品种Juglans regia L.和J. nigra L也很容易受到感染,如果引入这种真菌,将会严重地受到威胁。本文从文献中提供了有关该疾病,其症状,诊断特征,其在北美传播的历史,可能的控制措施以及欧洲,尤其是德国的核桃种植方面的广泛信息。

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