北海道で発生したゴボウ黒あざ病とその病原菌

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  • 三澤 知央
    北海道立総合研究機構 農業研究本部 道南農業試験場
  • 角野 晶大
    北海道立総合研究機構 農業研究本部 道南農業試験場 ホクサン株式会社

書誌事項

タイトル別名
  • Occurrence of Edible Burdock Black Scurf in Hokkaido and Its Pathogen
  • ホッカイドウ デ ハッセイ シタ ゴボウ コクアザヤマイ ト ソノ ビョウゲンキン

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<p>In 1992, basal petiole rot and root rot of edible burdock were found in three fields in Hokkaido, Japan. Three isolates were obtained from each field. Two and one isolate were identified as Rhizoctonia solani anastomosis group (AG)-2-2 IIIB and AG-2-2 IV, respectively, based on hyphal anastomosis reaction, culture appearance, temperature-dependent growth characteristics, and specific PCR. The originally observed symptoms were reproduced on roots inoculated with the isolates. Edible burdock black scurf caused by R. solani AG-2-2 IIIB has been previously reported in Japan, however, there are no reports of AG-2-2 IV. Therefore, we propose to include it as one of the pathogens of the disease.</p>

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