Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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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
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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.

벼 도열병균의 레이스분리 비율이 분리품종과 지역간에 어떤 차이가 있는지를 구명하기 위하여 시험을 수행하였다. 벼 도열병균의 레이스 분포는 채집지역이 동일하여도 분리품종이 상이하거나, 품종이 동일하여도 채집지역이 상이하면 레이스 종류와 비율에 있어서 큰 차이가 있었다. 정확한 레이스 조사를 위해서는 도열병균 채집지역의 객관적인 선정과 재배품종의 면적비율에 의하여 도열병균을 분리 동정하여야 할 것으로 생각된다. 식물체의 저항성측면에서 도열병균에 대한 유묘기 밭못자리상태에서의 저항성 정도와 성체기 본답상태에서의 잎도열병과 이삭도열병 발병정도와는 일치하지 않았다. 벼 품종에 대한 도열병균 침해 레이스의 수와 포장에서 밭못자리 검정의 저항성 정도와 본답상태의 잎도열병과 이삭도열병 발병정도와는 일정한 관계가 없었다.

Keywords

References

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