식물병연구 (Research in Plant Disease)

한국식물병리학회 (The Korean Society of Plant Pathology)
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마 재배지의 뿌리혹선충의 발생 실태 및 수직 분포

Occurrence and Vertical Distribution of Meloidogyne incognita in Chinese Yam (Dioscorea batatas)

  • 권기윤 (부산대학교생명자원과학대학 식물생명과학과) ;
  • 강헌일 (부산대학교생명자원과학대학 식물생명과학과) ;
  • 서종민 (부산대학교생명자원과학대학 식물생명과학과) ;
  • 윤을수 (부산대학교생명자원과학대학 선충연구센터) ;
  • 박남숙 (부산대학교생명자원과학대학 선충연구센터) ;
  • 최인수 (부산대학교생명자원과학대학 식물생명과학과)
  • Kwon, Giyoon (Plant Bioscience, College of Natural Resources and Life Science, Pusan National University) ;
  • Kang, Heonil (Plant Bioscience, College of Natural Resources and Life Science, Pusan National University) ;
  • Seo, Jongmin (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 (Plant Bioscience, College of Natural Resources and Life Science, Pusan National University)
  • 투고 : 2019.08.08
  • 심사 : 2019.08.29
  • 발행 : 2019.09.30
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초록

국내 마 주산지인 경상북도 안동시 풍천면 일대 총 53개 지점을 대상으로 식물기생성선충 종류와 밀도, 시기별 발생 실태, 토양 깊이별 분포를 조사하였다. 검출된 식물기생성선충은 뿌리혹선충(Meloidogyne incognita), 침선충(Paratylenchus spp.), 뿌리썩이선충(Pratylenchus spp.)등 3개의 속이었으며, 그중 뿌리혹선충은 53개 조사지점 중 43개 지점에서 검출되어(81%) 안동지역 마 재배지에서 가장 중요한 식물기생성선충이었다. 시기별 토양 내 뿌리혹선충 유충의 수는 8월까지는 토양 $300cm^3$ 당 10마리 정도였으며 9월에는 274마리, 수확기인 10월에는 624마리로 증가되었다. 토양 깊이별로는 토양 40-50 cm 깊이에 가장 유충의 밀도가 높았으며(1,840마리/$300cm^3$) 토양 70 cm 깊이까지 뿌리혹선충 유충이 발견되었다. 뿌리혹선충에 감염된 괴경은 외부에 혹이 발생하였고 괴경의 내부는 갈색점으로 변색되었으며, 마의 괴경 내 침입한 뿌리혹선충의 수도 40-50 cm에서 79마리로 가장 많았다. 따라서, 마 재배지에서의 뿌리혹선충 방제를 위해서는 토양 깊이 50 cm 정도에 가장 많은 뿌리혹선충 유충이 분포하므로 현재 사용하고 있는 시설재배지 토양소독법과는 다른 방제 방법이 개발되어야 할 것이다.

The study was conducted to investigate the infestation and distribution of plant-parasitic nematodes on Chinese yam (Dioscorea batatas) in Andong, Korea. Root-knot nematodes, Meloidogyne incognita was the most prevalent nematode species which is found from 43 yam fields (81.1%) with high population densities (average of 450 juveniles/$300cm^3$). Other nematodes, root-lesion nematode (Pratylenchus spp.) and pin nematode (Paratylenchus spp.) were less problematic. Density of juveniles (J2) of M. incognita was $10\;J2/300cm^3$ by August, then increased to 274 in September and 624 in October. The highest J2 density was found at the soil depth between 40 and 50 cm ($1,840\;J2/300cm^3$). M. incognita was able to infest yam tuber down to a depth of 70 cm and developed galls outside and brown spots inside. The highest number of females were found at 40-50 cm (79 females/10 cm piece) tuber from the top.

키워드

참고문헌

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