Occurrence of leaf sheath rot caused by Fusarium avenaceum (Fries) Saccardo on rakkyo (Allium chinense G. Don).

  • TAKEUCHI T.
    Chiba Prefectural Agriculture Research Center
  • KUBO C.
    Chiba Prefectural Agriculture Research Center
  • AOKI T.
    National Institute of Agrobiological Science

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  • Fusarium avenaceum (Fries) Saccardoによるラッキョウ赤枯病(新称)
  • Fusarium avenaceum Fries Saccardo ニ ヨル ラッキョウ アカガレビョウ シンショウ

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Abstract

Leaf sheath rot of rakkyo plants (Allium chinense G. Don) has been observed in Chiba Prefecture since 1990. Lerf blades became reddish and underground parts of leaf sheaths rotted. A Fusarium species was isolated from the diseased leaf sheaths and typical symptoms observed in nature were reproduced by inoculation. The casual agent was identified as Fusarium avenaceum (Fries) Saccardo.

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