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Pathogenic Races of Pyricularia oryzae Isolated from Various Rice Cultivars on the Blast Nursery and Paddy Field in Different Locations

벼 품종 및 지역에 따른 도열병균 레이스 분리와 도열병 발병정도와의 관계

  • Shim, Hongsik (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Yeh, Wan-Hae (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Yoo, Boung-Joo (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Myung, Inn-Shik (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Hong, Sung-Kee (Crop Protection Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Seungdon (Coordination Division, Research Policy Bureau, Rural Development Administration)
  • 심홍식 (국립농업과학원 농산물안전성부 작물보호과) ;
  • 예완해 (국립농업과학원 농산물안전성부 작물보호과) ;
  • 유병주 (국립농업과학원 농산물안전성부 작물보호과) ;
  • 명인식 (국립농업과학원 농산물안전성부 작물보호과) ;
  • 홍성기 (국립농업과학원 농산물안전성부 작물보호과) ;
  • 이승돈 (농촌진흥청 연구정책국 연구운영과)
  • Received : 2012.08.27
  • Accepted : 2012.12.07
  • Published : 2012.12.31

Abstract

This study was conducted to investigate the association of race distribution of Pyricularia oryzae with rice cultivar and location. Races present in a given location were different in cultivars, and the races from a given cultivars were different by location. For precise study of race distribution, it needs to identify isolates by considering cultivation ratio and collection area. There are great differences between the resistant degree in the upland blast nursery and on the resistant degree of the leaf blast and panical blast in the paddy field. The number of virulent races in a rice cultivar was not related with the resistant degree in blast nursery or in paddy field.

Keywords

Pyricularia oryzae;Race;Rice blast

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