Fusarium oxysporum f. sp. raphani에 대한 무 유전자원의 저항성 평가

• Published in: Korean journal of breeding Vol. 49; no. 4; pp. 344 - 350
• Main Authors: 전영아(Young-Ah Jeon), 성정숙(Jung-Sook Sung), 이주희(Juhee Rhee), 허온숙(On-Sook Hur), 노나영(Na-Young Ro), 백형진(Hyung-Jin Baek), 고호철(Ho-Cheol Ko)
• Format: Journal Article
• Language: Korean
• Published: 한국육종학회 31.12.2017; The Korean Breeding Society
• Subjects: 농학; Disease-resistance; Screening method; raphani; Fusarium oxysporum f. sp; Radish germplasm; Fusarium oxysporum f. sp. raphani
• ISSN: 0250-3360; 2287-5174
• DOI: 10.9787/KJBS.2017.49.4.344

Identification of Fusarium oxysporum f. sp. raphani and investigation on fusarium wilt development by isolates and inoculation methods were conducted to establish a screening method for fusarium wilt-resistance in radish (Raphanus sativus L.) germplasm. Pathogenicity of F. oxysporum f. sp. raphani isolate, Heonggye-1 and Heonggye-2, to radish plants was confirmed by seedling test. Radish seedlings were inoculated by root-dipping and soil-drenching with or without root-wounding. For Heonggye-1 isolate, mean disease indexes were 4.13 and 3.91 by root-dipping and soil-drenching with root-wounding, respectively, but those were 1.87 and 1.88 without root-wounding. For Heonggye-2 isolate, mean disease indexes were 3.83 to 4.37 regardless of inoculation methods. Two-hundred sixty accessions of radish germplasm collected from 9 countries of Asia and Europe were evaluated for fusarium wilt-resistance by soil-drenching with root-wounding with Heonggye-2 isolate. Fifty-four resistant accessions with higher than 70% of the percentage of resistant seedlings in accession (PR) and lower than 20% of the percentage of susceptible seedlings in accession (PS) was found. Eighteen susceptible accessions with lower than 20% of PR and higher than 50% of PS were selected. These accessions could be used as breeding and research materials after re-evaluation of disease-resistance and characterization of agronomical traits.