Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Evaluation of Resistance to Colletotrichum acutatum in Pepper Genetic Resources

고추 유전자원의 탄저병(Colletotrichum acutatum) 저항성 평가

  • Kim, Sang-Gyu (National Agrobiodiversity Center, National Academy of Agricultural Science, Rural Development Administration) ;
  • Ro, Na-Young (National Agrobiodiversity Center, National Academy of Agricultural Science, Rural Development Administration) ;
  • Hur, On-Sook (National Agrobiodiversity Center, National Academy of Agricultural Science, Rural Development Administration) ;
  • Ko, Ho-Cheol (National Agrobiodiversity Center, National Academy of Agricultural Science, Rural Development Administration) ;
  • Gwag, Jae-Gyun (National Agrobiodiversity Center, National Academy of Agricultural Science, Rural Development Administration) ;
  • Huh, Yun-Chan (Vegetable Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
  • 김상규 (국립농업과학원 농업유전자원센터) ;
  • 노나영 (국립농업과학원 농업유전자원센터) ;
  • 허온숙 (국립농업과학원 농업유전자원센터) ;
  • 고호철 (국립농업과학원 농업유전자원센터) ;
  • 곽재균 (국립농업과학원 농업유전자원센터) ;
  • 허윤찬 (국립원예특작과학원 채소과)
  • Received : 2012.04.06
  • Accepted : 2012.06.15
  • Published : 2012.06.30
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Abstract

Resistance of pepper (Capsicum spp.) to anthracnose (Colletotrichum acutatum) was evaluated during regeneration of Capsicum spp. in National Agrobiodiversity Center. Disease severity of 896 pepper accessions (430 accessions of C. annuum, 219 accessions of C. baccatum, 14 accessions of C. chacoense, 153 accessions of C. chinense, 70 accessions of C. frutescens, 2 accessions of C. pubescens, and unidentified 8 accessions) was investigated at 14 days after inoculation in $28^{\circ}C$ humid chamber. Forty nine accessions of pepper germplasm were resistant to C. acutatum. Among them, nine accessions were highly resistant to C. acutatum without wounding spray inoculation. Four accessions belonged to the species C. baccatum, one accession to C. chacoense, and four accessions to C. frutescens. Forty two resistant candidate accessions were inoculated with pin-prick wounding using a syringe needle. Five accessions were resistant as a less than 3% of disease severity to C. acutatum with wounding inoculation 5 days after inoculation. All resistant accessions were C. baccatum. These five pepper germplasm might be used as breeding resources for the anthracnose resistance breeding program.

농업유전자원센터에 보존하고 있는 896점의 고추(C. annuum 430점, C. baccatum 219점, C. chacoense 14점, C. frutescens 70점, C. pubescens 2점, 미동정 8점)에 C. acutatum을 접종 후 $28^{\circ}C$에서 14일간 배양 후 탄저병 발병 정도를 평가하였다. 무상처 분무 접종에서 총 49점이 C. acutatum에 저항성을 나타내었으며, 그 중 9점은 고도의 저항성을 나타내었다. 고도의 저항성을 나타내는 자원들은 C. baccatum 4점, C. chacoense 1점, C. frutescens 4점이었다. 무상처 분무 접종에서 탄저병 저항성을 나타내는 자원 중 42점을 상처 접종법으로 탄저병균을 접종하였다. 그 중 5점은 접종 5일 후에도 병반의 크기가 3%미만으로 나타나 저항성을 나타내었으며, 이들은 모두 C. baccatum이었다. 저항성을 보이는 5점은 탄저병 저항성 육성을 위한 자원으로 이용가능 할 것이다.

Keywords

References

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