Mottle necrosis of sweet potato caused by Pythium scleroteichum in Japan and varietal difference in susceptibility to the disease

Mottle necrosis of sweet potato caused by Pythium scleroteichum in Japan and varietal difference in susceptibility to the disease

Severe mottle necrosis (Shirogusare-byo in Japanese) was found on mature tubers of sweet potato (Ipomoea batatas) in Ibaraki Prefecture in October 2004. The causal organism was identified as Pythium scleroteichum hitherto unknown in Japan. Sweet potato cultivar Purple Sweet Lord was more susceptible...

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Veröffentlicht in:Journal of general plant pathology : JGPP 2007-04, Vol.73 (2), p.121-124
Hauptverfasser: Tojo, Motoaki, Watanabe, Ken, Kida, Kenichi, Li, Yingjie, Numata, Shuhei
Format: Artikel
Sprache:eng
Schlagworte:
Agriculture
Cultivars
Fungi
Pathogens
Plant pathology
Potatoes
Temperature effects
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Zusammenfassung:Severe mottle necrosis (Shirogusare-byo in Japanese) was found on mature tubers of sweet potato (Ipomoea batatas) in Ibaraki Prefecture in October 2004. The causal organism was identified as Pythium scleroteichum hitherto unknown in Japan. Sweet potato cultivar Purple Sweet Lord was more susceptible than cultivars Beniazuma, Benimasari, Koukei-14, and Tamayutaka to the pathogen at 25 degrees C, while this difference in the susceptibility was not clear at 15 degrees C. [PUBLICATION ABSTRACT]
ISSN:1345-2630
1610-739X
DOI:10.1007/s10327-006-0335-3