Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Resistance Degree of Cucurbits Cultivars to Colletotrichum orbiculare

탄저병(Colletotrichum orbiculare)에 대한 박과작물의 저항성

  • Shim, Sun-Ah (Research Center for Biobased Chemistry, Korea Research Institute of Chemical Technology) ;
  • Jang, Kyoung Soo (Research Center for Biobased Chemistry, Korea Research Institute of Chemical Technology) ;
  • Choi, Yong Ho (Research Center for Biobased Chemistry, Korea Research Institute of Chemical Technology) ;
  • Kim, Jin-Cheol (Research Center for Biobased Chemistry, Korea Research Institute of Chemical Technology) ;
  • Kim, Heung Tae (Department of Plant Medicine, College of Agriculture, Life Science and Environment, Chungbuk National University) ;
  • Choi, Gyung Ja (Research Center for Biobased Chemistry, Korea Research Institute of Chemical Technology)
  • 심선아 (한국화학연구원 바이오화학연구센터) ;
  • 장경수 (한국화학연구원 바이오화학연구센터) ;
  • 최용호 (한국화학연구원 바이오화학연구센터) ;
  • 김진철 (한국화학연구원 바이오화학연구센터) ;
  • 김흥태 (충북대학교 식물의학과) ;
  • 최경자 (한국화학연구원 바이오화학연구센터)
  • Received : 2012.08.18
  • Accepted : 2013.02.08
  • Published : 2013.06.30
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Abstract

Anthracnose disease caused by Colletotrichum orbiculare, induces severe damage to cucurbits worldwide. Resistance of 112 commercial cultivars of cucurbits to C. orbiculare was evaluated. Seedlings of each cultivar at 2- to 3-leaf stage were inoculated with C. orbiculare KACC 40809 by spraying spore suspension of the fungus at a concentration of $4.0{\times}10^5$ spores/mL. Among the 36 cultivars of cucumber, 'Asiastrike', 'Tongilbaedadagi', 'Daeseon', 'Cheongrokmatjjang', 'Nokyacheongcheong', and 'Asianogak' were moderately resistant and the others were susceptible. All the tested cultivars of melon (33) and watermelon (4) showed highly susceptible response to C. orbiculare. On the other hand, the squash cultivars (17) represented less susceptibility to the fungus than the other cucurbits. Of the squash cultivars, 'Gammirak' and 'Teotbat' were resistant and 12 cultivars were moderately resistant. Among the rootstocks for cucurbits, ten cultivars including 'JjeuyakaEX', 'Nunbusyeo', 'Union', 'RS111', 'Ganggeuntoza', 'Hwangjaetoza', 'NO.8', 'Shintoza', 'Bulpaetoza', and 'Newtype' showed high resistance to the anthracnose pathogen. From the results, the resistant cultivars could be used as sources of resistance to cucurbits anthracnose (C. orbiculare) in the future breeding programs.

Colletotrichum orbiculare에 의한 탄저병은 오이, 수박 및 멜론 등의 박과작물에 전세계적으로 발생하여 많은 피해를 주고 있다. 본 연구에서는 시판 중인 박과작물 112개 품종의 탄저병에 대한 저항성 정도를 조사하였다. 각 품종의 2-3엽기 유묘에 C. orbiculare KACC 40809의 포자 농도가 4.0 C $40^5spores/mL$인 포자현탁액을 분무하여 접종하였다. 실험한 36개 오이 품종 중 '아시아스트라이크', '통일백다다기', '대선', '청록맛짱', '녹야청청' 및 '아시아노각' 등 6품종은 중도저항성을 나타내었으며, 나머지 품종들은 감수성을 보였다. 멜론 및 참외 33개 품종과 수박 4개 품종들은 C. orbiculare에 대하여 모두 감수성을 나타내었다. 이와 달리 호박 품종들은 실험한 다른 박과작물에 비하여 낮은 감수성을 보였다. 호박 17개 품종 중 '감미락단호박'과 '텃밭풋호박'은 저항성을, 12개 품종은 중도저항성을 나타냈다. 박과작물을 위한 대목 22개 품종 중 '쯔야까EX', '눈부셔', '유니온', 'RS111', '강근토좌', '황제토좌', 'NO.8', '신토좌', '불패토좌' 및 '뉴타입' 등 10개 품종은 저항성을 보였고, 4개 품종은 중도저항성을 나타냈다. 이상의 결과로부터 선발된 저항성 품종들은 박과작물 탄저병 저항성 육종을 위한 유전자원으로 이용될 수 있으리라 생각되었다.

Keywords

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