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Occurrence of Gray Mold on Blueberry Trees Caused by Botrytis cinerea in Korea

Botrytis cinerea에 의한 블루베리 잿빛곰팡이병의 한국 내 발생

  • Hong, Sung-Kee (Crop Protection Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA)) ;
  • Choi, Hyo-Won (Crop Protection Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA)) ;
  • Lee, Young-Kee (Crop Protection Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA)) ;
  • Lee, Sang-Yeob (Agricultural Microbiology Team, NAAS, RDA) ;
  • Kim, Wan-Gyu (Agricultural Microbiology Team, NAAS, RDA)
  • 홍성기 (국립농업과학원 작물보호과) ;
  • 최효원 (국립농업과학원 작물보호과) ;
  • 이영기 (국립농업과학원 작물보호과) ;
  • 이상엽 (국립농업과학원 농업미생물팀) ;
  • 김완규 (국립농업과학원 농업미생물팀)
  • Received : 2011.11.14
  • Accepted : 2011.11.21
  • Published : 2011.12.01

Abstract

Gray mold symptoms were frequently observed on green twigs, blossoms, leaves, and fruits of blueberry trees grown in greenhouses in Cheongyang, Dangjin, Daejeon, and Jeju during disease survey in eight locations of Korea from 2007 to 2010. The disease symptoms were not observed in the fields of the other locations investigated. The disease incidence ranged 1~30% in the greenhouses investigated. A total of 27 single spore isolates of Botrytis species were obtained from the gray mold symptoms, and all the isolates were identified as Botrytis cinerea based on their morphological and cultural characteristics. Four isolates of the fungus were tested for pathogenicity to leaves of four varieties of blueberry trees by artificial inoculation with conidial suspensions. All the tested isolates caused gray mold symptoms on the leaves, which were similar to those observed in the greenhouses. This is the first report that B. cinerea causes gray mold of blueberry trees grown in greenhouses in Korea.

2007년부터 2010년에 걸쳐 국내 8지역에서 블루베리의 병을 조사한 결과, 청양, 당진, 대전, 제주 지역의 온실에서 재배중인 블루베리의 신초, 잎, 꽃, 열매에서 잿빛곰팡이병 증상이 빈번하게 관찰되었으며, 조사된 다른 지역의 포장에서는 잿빛곰팡이병 증상이 관찰되지 않았다. 조사된 온실내 이 병의 발생율은 1~30%였다. 병반에서는 Botrytis속 균이 분리되었으며, 단포자 분리된 27개 균주의 형태적 및 배양적 특성을 조사한 결과, 모두 Botrytis cinerea로 동정되었다. 병원성 검정을 위하여 선발한 4균주를 4품종의 블루베리잎에 분생포자현탁액으로 인공접종한 결과, 4균주 모두 접종한 블루베리 잎에 자연병반과 유사한 병반을 형성하였다. 국내의 온실재배 블루베리에 발생하는 B. cinerea에 의한 잿빛곰팡이병은 본 연구에 의해 처음으로 보고된다.

Keywords

References

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