Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Resistance Evaluation of Tomato Germplasm against Bacterial Wilt by Ralstonia solanacearum

토마토 유전자원의 Ralstonia solanacearum에 의한 풋마름병 저항성 평가

  • 정은주 (동아대학교 의생명과학과) ;
  • 주해진 (동아대학교 응용생명과학과) ;
  • 최수연 (동아대학교 응용생명과학과) ;
  • 이승엽 (동아대학교 응용생명과학과) ;
  • 정용훈 (동아대학교 응용생명과학과) ;
  • 이명환 (동아대학교 응용생명과학과) ;
  • 공현기 (동아대학교 응용생명과학과) ;
  • 이선우 (동아대학교 의생명과학과)
  • Received : 2014.08.07
  • Accepted : 2014.11.10
  • Published : 2014.12.31
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Abstract

This study was conducted to evaluate tomato plant resistance against bacterial wilt by Ralstonia solanacearum using tomato cultivars or tomato breeding lines maintained in RDA-Genebank of Rural Development Administration and to select resistant tomato lines for breeding purpose. We evaluated the disease responses of a total of 13 cultivars and 39 breeding lines from RDA-Genebank using R. solanacearum SL341 strain, which is a representative strain in Korea. Tomato cultivar Hawaii 7996 and Moneymaker were used as a resistant control plant and a susceptible control plant, respectively. A total of 32 cultivars were susceptible and 10 cultivars showed various disease response suggesting resistant phenotype segregation in the lines. Five commercial cultivars and 5 breeding lines exhibited strong resistance to bacterial wilt by the SL341 strain. These 5 breeding lines might be used for further study of plant defense response against bacterial wilt and cloning of the resistance gene from tomato plants. Ultimately, the selected lines could be used for tomato breeding to generate bacterial wilt resistant tomato plants.

Ralstonia solanacearum에 의해 발생하는 토마토 풋마름병에 대하여 저항성 품종이나 육성계통을 선발하기 위하여 국립농업유전자원센터로부터 국내 유전자원을 분양받아 국내 병원균에 대한 저항성 여부를 평가하였다. 한국에서 분리된 R. solanacearum SL341 균주로 52개의 품종과 계통의 저항성을 Hawaii 7996 품종과 Moneymaker 품종을 각각 저항성, 감수성 대조품종으로 사용하여 저항성 반응을 평가하였다. 그 결과 32개의 품종이 감수성이며, 10개의 품종과 계통은 저항성이 고정되지 않은 품종으로 나타났다. 5개의 시판품종과 5개의 육성 계통이 저항성 반응을 보였다. 본 연구결과를 통해 5개의 육성 계통은 저항성/방어반응의 후속연구와 저항성 품종 육종에 활용할 수 있음을 제시한다.

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