Physiologic Races of Phytophthora infestans(Mont.) de Bary at Alpine Area, Korea during the Period from 1971 to 1973

대관령 지방에 발생하는 감자역병균의 생리형

During the period from 1971 to 73 physiologic races of potato late blight pathogen, Phytophthora infestans, causing severe losses of seed potato production at Alpine area, Korea, were investigated. In 1971, 68 isolates of the pathogen from various potato varieties were identified by the use of differential host Plants, and found that there were 10 races; 0, 1, 2, 3, 1.3, 1.4, 3.4, 1.3.4, 2.3.4. The most Predominant races for the year were 0 and 3. In 1972, the same procedure was repeated with 62 isolates of the pathogen, and found 5 different races; 0, 1, 4, 1.3 and 1.3.4. The most predominant race for the year was race 0. In 1973, six races; 0, 3, 4, 1.3, 3.4 and 1.3.4 were found from 76 isolates of the year, and the race 0 and 4 apperared as the most Predominant races for the year. Total of 11 races; 0, 1, 3, 4, 1.3, 1.4, 3.4, 1.3.4, 2.3.4 and 1.2.3.4, were found during the period from 1971 to 73 at Alpine area, among which the most predominant races were race 0, 3, and 4. The investigation indicated that the anual incidence of these races largely depended on the climatic conditions of the year.

본 시험은 우리나라 씨감자 주요 생산지인 대관령지방에 분포되어 있는 역병군의 생리형을 조사 판별하기 위해 71-73년에 걸쳐 수행되었던 바. 1. 1971년에는 68계통을 분리 접증 했는데 Race 0, Race 1, Race 2, Race 3, Race 1.3, Race 1.4, Race 3.4, Race 1.3.4, Race 2.3.4, Race 1.2.3.4등 10가지 생리형이 간별 되었으며 그중 Race 0와 Race 3가 제일 널리 분포 되었었고 2. 1972년에는 62계통을 분리 하였던 바 Race 0, Race 1, Race 4, Race 1.3, Race 1.3.4등 5가지 생리형이 나타났으며 그중 전해에 이어 Race 0가 널리 분포되어 있었다. 3. 1973년에는 76계통비서 Race 0, Race 3, Race4, Race 1.3, Race 3.4 Race 1.3.4 등 9가지 생리형이 나타났던 바 Race 0와 Race 4가 가장 널리 분포 되어있는 생리형으로 나타났다. 4. 이로써 우리나라에는 Race 0, Race 1, Race 2, Race 3, Race 4, Race 1.3, Race 1.4, Race 3.4, Race 1.3.4, Race 2.3. 4,Race 1.2.3.4 등 11가지 Race가 존재함이 밝혀졌으며 Race 0, Race 3과 Race 4가 가장 널리 분포 되어있는 생리형으로 나타났다. 5. 이와 같이 생리형은 매년 기후조건의 차이에 따라 발생정도가 다름을 알 수 있다.