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2014년과 2015년 잎 도열병 발생 분포 및 레이스 분포 현황

Distribution of Rice Blast Disease and Pathotype Analysis in 2014 and 2015 in Korea

  • 김양선 (농촌진흥청 국립식량과학원 재배환경과) ;
  • 고재덕 (농촌진흥청 국립식량과학원 재배환경과) ;
  • 강인정 (농촌진흥청 국립식량과학원 재배환경과) ;
  • 심형권 (농촌진흥청 국립식량과학원 재배환경과) ;
  • 신동범 (농촌진흥청 국립식량과학원 재배환경과) ;
  • 허성기 (농촌진흥청 국립식량과학원 재배환경과) ;
  • 노재환 (농촌진흥청 국립식량과학원 재배환경과)
  • Kim, Yangseon (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration) ;
  • Go, Jaeduk (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration) ;
  • Kang, In Jeong (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration) ;
  • Shim, Hyeong-Kwon (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration) ;
  • Shin, Dong Bum (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration) ;
  • Heu, Sunggi (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration) ;
  • Roh, Jae-Hwan (Crop Cultivation and Environment Research Division, National Institute of Crop Science, Rural Development Administration)
  • 투고 : 2016.10.25
  • 심사 : 2016.11.02
  • 발행 : 2016.12.31

초록

2014년부터 2015년까지 12개의 밭못자리 시험지에서 잎 도열병의 발병 정도를 조사하였다. 2014년 잎 도열병은 $3.7{\pm}2.1$, 2015년에는 $4.4{\pm}2.1$의 평균 발병 정도를 보였다. 특히, 2015년에는 이천과 철원에서 벼 도열병 발병률이 2014년에 비해 2배 이상 증가했다. 2014년과 2015년에 분리된 벼 도열병균 587종에 대해 한국형 판별품종 시스템으로 분석한 결과 2014년에는 34종, 2015년에는 51종의 레이스로 결정되어 병원균의 병원성 변화가 크다는 것을 알 수 있었다. KI 레이스대 KJ 레이스의비율은 2014년에는 54:46, 2015년에는 70:30으로 나타났다. 2014년의 우점 레이스는 KJ-301로 총 16%를차지했고, 2015년에는 KI-101이 15%를우점했다. 2015년 지역별 레이스 분포결과 고성에서는 KI 레이스가 97% 비율로 분포하였고, 철원에서는 KJ 레이스가 96%의 분포율을 보여 지역 간 차이가 크게 나타났다. 십여 년간 낮은 분포를 보이던 KI-101 레이스가 전국적으로 높은 비율로 확인된다는 점은, 이런 현상이 계속된다고 가정할 때, 도열병균 집단이 빠르게 변하고 있으며 이에 대한 대응이 필요하다는 것을 말해준다. 따라서 이 연구결과는 벼 도열병의 대발생을 막기 위한 벼 품종육성에 기초자료로 이용할 수 있다.

The nursery test against rice blast in Korea from 2014 to 2015 was analyzed. The average of disease severity of leaf blast in 12 sites showed $3.7{\pm}2.1$ in 2014 and $4.4{\pm}2.1$ in 2015. Disease severity of leaf blast in Icheon and Cheolwon was increased ranging from $2.8{\pm}2.2$ in 2014 to $6.3{\pm}1.8$ in 2015. Using a designation system, a total of 588 isolates collected those years were categorized into 34 races in 2014 and 51 races in 2015 based on the reaction pattern of Korean differential varieties. The blast isolates of 2015 were more diverse than those in 2014. The ratios of KI race to KJ race were 54:46 in 2014 and 70:30 in 2015; however, the predominant race population was KJ-301 as 16%, and KI-101 as 15% in 2014 and 2015, respectively. These results indicate that the distribution of the blast races is getting more diverse in Korea, therefore, this research would provide the possibility to predict race distribution and change to prevent the outbreak of rice blast and will also serve as a useful information for breeding of resistant rice cultivar against blast.

키워드

참고문헌

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피인용 문헌

  1. Early Forecasting of Rice Blast Disease Using Long Short-Term Memory Recurrent Neural Networks vol.10, pp.2, 2018, https://doi.org/10.3390/su10010034