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In 2007–2008, the barley net blotch agent Pyrenophora teres was found to infect spring wheat in northwestern Russia, causing symptoms similar to wheat tan spot caused by P. tritici-repentis. The frequency of occurrence of P. teres on spring wheat cultivars was 12–29%. P. teres isolates were more virulent to some wheat cultivars than P. tritici-repentis ones. P. teres was not found on wheat in the south of Russia (Krasnodar krai, Dagestan). 相似文献
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