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- Title
도열병 내구 저항성 자포니카 벼품종 팔공의 저항성 관련 유전좌위 분석.
- Authors
백만기; 조영찬; 박현수; 정종민; 김우재; 남정권; 김춘송; 권순욱; 김보경
- Abstract
Rice blast caused by the fungus Magnaporthe grisea (anamorphic: Pyricularia oryzae) is an important disease in rice and development of resistant varieties to blast is one of the most important goals in rice breeding programs. A japonica rice variety, Palgong, has shown resistance to the Korean blast pathogen since it was developed in 1996. Nine blast resistance quantitative trait loci (QTLs) in Palgong alleles were identified on chromosomes 2, 4, 7, and 11. Four QTLs of qBn2.3, qBn4.2, qBn11.1, and qBn11.2 explained 28–56.7% of total phenotypic variation, while five QTLs of qBn2.2, qBn2.4, qBn4.1, qBn7.1, and qBn7.2 explained 9.7–18.8%. In a previous study, one to four resistance genes were located on the loci qBn2.2, qBn2.3, qBn4.2, qBn11.1, and qBn11.2, however, resistance genes were not located on the loci qBn2.4, qBn4.1, and qBn7.1. A major QTL, qBn11.2, explaining 56.7% of total phenotypic variation was related to the durable resistance of Palgong. Additionally, rice stripe virus resistance of Palgong was assumed to be based on the Stvb-i gene, which is located on a major QTL qBn11.2.
- Subjects
RICE blast disease; PYRICULARIA grisea; RICE breeding; PYRICULARIA oryzae; RICE diseases &; pests; RICE
- Publication
Korean Journal of Breeding Science, 2019, Vol 51, Issue 4, p395
- ISSN
0250-3360
- Publication type
Article
- DOI
10.9787/KJBS.2019.51.4.395