Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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Screening of Resistant Chinese Cabbage Cultivar against Clubroot (Plasmodiophora brassicae) for Cultivation in Highland

고랭지 배추재배를 위한 뿌리혹병 저항성 품종선발

  • Yoon, Cheol-Soo (Department of Plant Science, Gangneung-Wonju National University) ;
  • Jung, Eun-Kyoung (Department of Plant Science, Gangneung-Wonju National University) ;
  • Lee, Sang-Jun (Department of Plant Science, Gangneung-Wonju National University) ;
  • Zhang, Yan (Department of Plant Science, Gangneung-Wonju National University) ;
  • Lee, Jae-Eun (Department of Plant Science, Gangneung-Wonju National University) ;
  • Kim, Byung-Sup (Department of Plant Science, Gangneung-Wonju National University)
  • 윤철수 (강릉원주대학교 식물생명과학과) ;
  • 정은경 (강릉원주대학교 식물생명과학과) ;
  • 이상준 (강릉원주대학교 식물생명과학과) ;
  • 장연 (강릉원주대학교 식물생명과학과) ;
  • 이재은 (강릉원주대학교 식물생명과학과) ;
  • 김병섭 (강릉원주대학교 식물생명과학과)
  • Received : 2010.01.11
  • Published : 2010.04.01
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Abstract

This study was conducted to select the cultivars and strains which are suitable in cultivation of the Chinese cabbage having good horticultural characteristics and the resistance to clubroot caused by Plasmodiophora brassicae, which is a widespread disease that causes serious problems in many Brassica growing areas. Thirty four cultivars and nineteen strains of the Chinese cabbage were planted in the contaminated fields in highland and investigated the wilting symptom due to the initial disease occurrence and high temperature. Disease occurrence rate and severity of clubroot and the horticultural characteristics were also examined. According to the results, Bulamplus, Kangryeokyeoleumbaechu among cultivars of Chinese cabbage, SP-05, SP-02, CR DB 50, and CR DB 29 among strains of Chinese cabbage were resistant to hot weather by showing delayed above-ground symptom (wilting) of clubroot in 30 days after transplanting. In case of below-ground clubroot rate, Daetong, super CR Kimi 85 and super CR Hiroki among the cultivars of Chinese cabbage were resistant to clubroot in 60 days after transplanting. When fresh weight of Chinese cabbage among cultivars were compared, super CR Hiroki of over 2,500 g was the highest among other cultivars. Although the resistant and susceptible reactions of Chinese cabbage cultivars and strains against clubroot disease were somewhat different from the above-ground symptoms (wilting) of clubroot in 30 days and below-ground symptoms of clubroot in 60 days, we recommend that super CR Hiroki, CR Kimi 85, CR Janggun among cultivars of Chinese cabbage and CR DB 50 and CR DB 29 among strains of Chinese cabbage will be more suitable in cultivation of Chinese cabbage in highland.

본 연구는 53의 배추품종 및 계통에 대한 고랭지재배에 적합한 품종을 선발하기 위하여 원예적 특성이 우수하면서 십자화과 작물 재배지역에서 심각하게 발생하는 배추 뿌리혹병에 저항성인 배추를 선발하기 위하여 실험을 수행하였다. 34개 품종의 배추와 19개 계통의 배추를 배추뿌리혹병원균으로 오염된 고랭지 포장에 정식하였다. 정식 30일 후에 내서성 및 지상부 뿌리혹병 발생에 의한 시들음 조사를 하였고, 정식 60일 후에 뿌리흑병 지하부 발생조사, 품종 및 계통 별 수량성을 알아보고자 생체중을 측정하였다. 정식 30일 후 내서성 및 뿌리혹병에 대한 지상부 시들음 조사에서 '불암플러스', '강력여름배추' 품종과 'SP-02', 'SP-05', 'CR DB 29', 'CR DB 50' 계통이 저항성이 있는 것으로 나타났다. 정식 60일 후 뿌리혹병 발병률에 대한 지하부 조사에서는 '대통 품종', 'Super CR Kimi 85 품종', 'super CR Hiraki' 품종이 뿌리혹병에 대한 저항성이 높은 것으로 조사되었다. 정식 60일 후 품종별 생체중 조사에서는 'Super CR Hiroki' 품종이 생체중 2,500 g이상으로 다른 품종에 비하여 월등히 좋았다. 배추정식 초기인, 정식 후 30일 지상부의 시들음 조사에서 저항성품종으로 조사된 성적과 정식 후 60일 뿌리혹병에 대한 지하부 저항성 조사 성적은 다소 차이가 있었다. 배추품종으로 'Super CR Hiraki', ' Super CR Kimi 85', 'CR 장군'이 배추 계통으로 'CR DB 29', 'CR DB 50'이 내서성 및 뿌리혹병 발생에도 저항성을 보였으며 아울러 원예학적 특성 중 생체중에 대해서도 윌등히 우수하여 강원도 고랭지 재배에 적합할 것으로 사료된다.

Keywords

References

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