| 우리나라 벼 도열병균의 대표 균주 및 벼의 저항성 유전자형 선발 |
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고재덕 ( Jae Duk Goh ) , 김병련 ( Byung Ryun Kim ) , 이세원 ( Se Won Lee ) , 신동범 ( Dong Bum Shin ) , 정지웅 ( Ji Ung Jeung ) , 조영찬 ( Young Chan Cho ) , 한성숙 ( Seong Sook Han ) |
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| Selection of Representative Magnaporthe oryzae Isolates and Rice Resistant Gene Types for Screening of Blast-resistant Rice Cultivars |
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Jaeduk Goh1, Byung-Ryun Kim2, Se-Won Lee3, Jae-Hwan Roh4, Dong-Bum Shin1, Ji-Ung Jeung5, Young-Chan Cho6 and Seong-Sook Han1* |
1Crop Environment Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 441-857, Korea
2Agricultural Environment Research Division, Chungcheongnam-do Agriculture Research & Extension Services, Yesan 340-861, Korea
3Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
4Winter Cereal and Forage Crop Research Division, National Institute of Crop Science, Rural Development Administration, Iksan 570-080, Korea
5Rice Research Division, National Institute of Crop Science, Rural Development Administration, Suwon 441-857, Korea
6Rice Breeding and Cultivation Research Division, National Institute of Crop Science, Rural Development Administration, Iksan 570-080, Korea |
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Received: September 03, 2013 Revised: October 22, 2013 Accepted: November 28, 2013 |
| Abstract |
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Rice blast is one of the most serious disease threatening stable production of rice. Breeding of resistant cultivars has been used as the most effective and useful method to controll rice blast caused by Magnaporthe oryzae. To collect rice blast isolates in fields and test their pathogenicity on new cultivars are important for establishment of new resistant cultivars breeding program of rice. Pathotypes of Korean rice blast isolates have been categorized to Korean differential race system developed in 1985. However, it is little known about genetic background of Korean differential cultivars, so that it is hard to understand for relationship between each pathogen and each host plant at genetic level. In this study, we suggested necessity of a new differential system by analyzing pathogenic responses between 24 monogenic rice lines and 200 Korean rice blast isolates. In addition, we determined the nine representative resistant genes based on the resistance responses of the monogenic lines to rice blast isolates, indexed resistant responses of the monogenic lines to ten representative rice blast isolates and selected 30 Korean representative rice blast isolates proper to Korean system. We think the newly developed differential race system can be broadly used to select resistant cultivars to rice blast in Korea. |
| Key Words:
Differential system, Magnaporthe oryzae, Monogenic lines, Resistance, Rice blast |
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