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First Report of Corky Roots of Lettuce (Lactuca sativa) Associated with Paratylenchus projectus

해바라기침선충(Paratylenchus projectus)에 의한 상추 피해 발생 보고

  • Kwon, Giyoon (Department of Plant Bioscience, College of Natural Resources and Life Science, Pusan National University) ;
  • Kang, Heonil (Department of Plant Bioscience, College of Natural Resources and Life Science, Pusan National University) ;
  • Seo, Jongmin (Department of Plant Bioscience, College of Natural Resources and Life Science, Pusan National University) ;
  • Yun, Eulsoo (Nematode Research Center, Life and Industry Convergence Research Institute, Pusan National University) ;
  • Park, Namsook (Nematode Research Center, Life and Industry Convergence Research Institute, Pusan National University) ;
  • Choi, Insoo (Department of Plant Bioscience, College of Natural Resources and Life Science, Pusan National University)
  • 권기윤 (부산대학교 생명자원과학대학 식물생명과학과) ;
  • 강헌일 (부산대학교 생명자원과학대학 식물생명과학과) ;
  • 서종민 (부산대학교 생명자원과학대학 식물생명과학과) ;
  • 윤을수 (부산대학교 생명자원과학대학 선충연구센터) ;
  • 박남숙 (부산대학교 생명자원과학대학 선충연구센터) ;
  • 최인수 (부산대학교 생명자원과학대학 식물생명과학과)
  • Received : 2019.08.23
  • Accepted : 2019.09.21
  • Published : 2019.12.31

Abstract

Severe damage on a greenhouse grown lettuce (Lactuca sativa L.) associated with Paratylenchus projectus is described for the first time. There were no marketable lettuce in entire greenhouse after three months of planting. Lettuce roots system appeared corky and most of feeder rootlets disappeared. Population densities of P. projectus were ranged from 320-11,600 nematodes per 100 ㎤ of soil. In an inoculation test in a greenhouse, P. projectus is proved as a causal agent of lettuce damage.

상추 시설재배지에서 해바라기침선충(Paratylenchus projectus)에 의한 피해가 발생하였다. 피해발생 시설에서 약 3개월 정도 상추를 재배하고 있었는데 상품성이 있는 상추는 전혀 생산되지 않았다. 피해 상추는 잔뿌리가 거의 없었고 굵은 뿌리는 푸석하게 부풀어 코르크화 현상이 발생했었다. 본 시설하우스에서 발견된 침선충 밀도는 토양 100 ㎤ 당 평균 3,296마리(320-11,600)로 매우 높았고 본 시설하우스의 흙을 사용하여 상추를 정식하여 실험한 결과, P. projectus 접종구에서 30% 정도 상추 생육의 저하가 발생하였다. 따라서 이 증상을 해바라기 침선충(P. projectus)에 의한 "상추 뿌리 코르크병"으로 명명하고자한다.

Keywords

References

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