Journal of the Korean Society of International Agriculture (한국국제농업개발학회지)

The Korean Society of International Agriculture (한국국제농업개발학회)
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Screening of Disease Resistance of Introduced Lettuce Cultivars from Overseas to Fusarium Wilt(Fusarium oxysporum f. sp. lactucae)

상추 국외 도입 유전자원의 시들음병 저항성 검정

  • Jeon, Young-Ah (International Technology Cooperation Center, Rural Development Administration) ;
  • Rhee, Ju-Hee (National Agrobiodiversity Center, National Institute of Agricultural Science) ;
  • Lee, Jae-Eun (National Agrobiodiversity Center, National Institute of Agricultural Science) ;
  • Sung, Jung-Sook (National Agrobiodiversity Center, National Institute of Agricultural Science) ;
  • Hur, On-sook (National Agrobiodiversity Center, National Institute of Agricultural Science) ;
  • Ro, Na-young (National Agrobiodiversity Center, National Institute of Agricultural Science) ;
  • Lee, Sok-Young (National Agrobiodiversity Center, National Institute of Agricultural Science) ;
  • Lee, Ho-Sun (National Agrobiodiversity Center, National Institute of Agricultural Science)
  • 전영아 (농촌진흥청 기술협력국 국제기술협력과) ;
  • 이주희 (국립농업과학원 농업유전자원센터) ;
  • 이재은 (국립농업과학원 농업유전자원센터) ;
  • 성정숙 (국립농업과학원 농업유전자원센터) ;
  • 허온숙 (국립농업과학원 농업유전자원센터) ;
  • 노나영 (국립농업과학원 농업유전자원센터) ;
  • 이석영 (국립농업과학원 농업유전자원센터) ;
  • 이호선 (국립농업과학원 농업유전자원센터)
  • Received : 2018.07.13
  • Accepted : 2018.08.27
  • Published : 2018.09.30
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Abstract

This study was conducted to get information of Fusarium wilt resistance for introduced lettuce cultivars from 12 countries. 111 developed cultivars introduced from 12 countries showed intense and broad resistance symptom. The withered rates of the 111 accessions widely ranged from 0(no symptom) to 4(completely died caused by Fusarium wilt) index. The average of pathogenicity of all evaluated accessions was $2.6{\pm}0.19$. Among them, 7 accessions including IT 294125 showed strong resistance(100 percent survival from Fusarium wilt) and 16 accessions including IT 289569, showed high level of resistance that is higher than 80% of 0 level and lower than 20 % of 3 or 4 level to young plants evaluated. Among the 16 accessions, 11 accessions were developed from U.S.A, 4 accessions from Turkey, and 1 from China. The 16 accessions consisted of 8 crisphead, 5 leaf lettuce, 2 romain type, and 1 stem type. As a result, 16 accessions which showed high level of resistance to Fusarium wilt can be possible to be used by commercial farmers and breeders. However, research related to the exploration of appropriate materials(accessions) for breeding cultivars with variable characters, good quality, high functional components, high consumer acceptability, etc. should be continued, considering pathogenicity test was conducted in young stage.

국내 시설재배 상추의 시들음병에 대한 안정적 재배를 위해 농가에 보급 가능한 저항성 자원을 탐색하기 위하여 12개 국가에서 육성한 111개 도입자원의 시들음병 저항성 정도를 조사하였다 1. 병원균 접종 후 14일째 공시한 저항성 표준품종인 '뚝섬적축면'과 감수성 '미풍포찹적축면'을 포함한 공시 자원들의 병징이 뚜렷하게 나타남. 2. 시들음병 저항성 정도 범위는 전혀 고사되지 않은 자원(발병정도 0)부터 전체 고사하는 자원(발병정도 4) 까지 넓게 분포하여 전체 111개 자원에 대한 평균 발병정도는 $2.6{\pm}0.19$이었음. 3. 전체 자원 중 IT 294125 등 7개 자원이 병징이 전혀 나타나지 않았고, 저항성 기준으로 정한 발병정도 0인 개체비율이 80%이상이고 발병정도가 3이상인 개체비율이 20% 이하인 자원은 IT 289569 등 16개 자원이었음 4. 저항성을 보인 16개 자원 중 IT 289569 등 미국 원산이 11개, 터키 원산이 IT296680 등 4개, 중국 원산이 IT 301287로 1개이었음. 1) 상추 유형으로는, 결구상추가 IT289569 등 8개, 잎상추는 IT 296679 등 5개, 로메인 상추가 IT296680 등 2개, 줄기상추 1개(IT 301287) 5. 본 연구결과 시들음병 저항성을 보인 16개 자원은 시들음병 발생이 높은 농가에서 이용 가능한 품종으로 생각되나, 병 저항성 검정이 유묘 단계에서 이루어졌기 때문에 생육 전반의 종합적인 특성을 고려하여 우수자원을 선발하는 후속연구 필요.

Keywords

Acknowledgement

Supported by : 국립농업과학원

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