The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Screening of Selected Korean Sweetpotato (Ipomoea batatas) Varieties for Fusarium Storage Root Rot (Fusarium solani) Resistance

  • Lee, Seung-yong (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Paul, Narayan Chandra (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Park, Won (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Yu, Gyeong-Dan (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Park, Jin-Cheon (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Chung, Mi-Nam (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Nam, Sang-Sik (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Han, Seon-Kyeong (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Hyeong-Un (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Goh, San (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Lee, Im Been (Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration) ;
  • Yang, Jung-Wook (Crop Cultivation & Environment Research Division, National Institute of Crop Science, Rural Development Administration)
  • Received : 2019.08.02
  • Accepted : 2019.11.14
  • Published : 2019.12.31
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Abstract

A common post-harvest disease of sweetpotato tuber is root rot caused by Fusarium solani in Korea as well as the other countries. Storage root rot disease was monitored earlier on sweetpotato (Ipomoea batatas) in storehouses of different locations in Korea. In the present study, an isolate SPL16124 was choosen and collected from Sweetpotato Research Lab., Bioenergy Crop Research Institute, NICS, Muan, Korea, and confirmed the identification as Fusarium solani by conidial and molecular phylogenetic analysis (internal transcribed spacer ITS and translation elongation factor EF 1-α gene sequences). The isolate was cultured on potato dextrose agar, and conidiation was induced. The fungus was screened for Fusarium root rot on tuber of 14 different varieties. Among the tested variety, Yenjami, Singeonmi, Daeyumi, and Sinjami showed resistant to root rot disease. Additionally, the pathogen was tested for pathogenicity on stalks of these varieties. No symptom was observed on the stalk, and it was confirmed that the disease is tissue specific.

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References

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