지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 317 - 331 (15page)
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초록· 키워드
오류제보하기
Development of disease resistant plant is one of the important objectives in rice breeding programs because biotic stresses can adversely affect rice growth and yield losses. This study was conducted to identify lines with multiple-resistance genes to biotic stress among 173 hybrid rice breeding lines and germplasms using DNA-based markers. Our results showed that one hybrid rice line [IR98161-2- 1-1-k1-3 (IR86409-3-1-1-1-1-1/IRBB66)] possessed 5 bacterial blight resistance genes (Xa4, xa5, Xa7, Xa13 and Xa21) while two hybrid rice lines [IR98161-2-1-1-k1-2 (IR86409- 3-1-1-1-1-1/IRBB66) and 7292s (IR75589-31-27-8-33S(S1)/ IR102758B)] possessed 3 bacterial blight resistance genes (Xa4, Xa7 and Xa21, and Xa3, Xa4 and xa5). Molecular survey on rice blast disease revealed that most of these lines had two different resistant genes. Only 11 lines possessed Pib, Pi-5, and Pi-ta. In addition, we further surveyed the distribution of insect resistant genes, such as Bph1, Bph18(t), and Wbph. Three hybrid breeding lines [IR98161-2-1-1-k1-3 (IR86409-3-1-1-1-1-1/IRBB66), IR98161-2-1-1-k1-2 (IR86409- 3-1-1-1-1-1/IRBB66), and 7292s (IR75589-31-27-8-33S(S1) /IR102758B)] contained all three resistance genes. Finally, we obtained four hybrid rice breeding lines and germplasms [IR98161-2-1-1-k1-2 (IR86409-3-1-1-1-1-1/IRBB66), Damm- Noeub Khmau, 7290s, and 7292s (IR75589-31-27-8-33S(S1)/ IR102758B)] possessing six-gene combination. They are expected to provide higher level of multiple resistance to biotic stress. This study is important for genotyping hybrid rice with resistance to diverse diseases and pests. Results obtained in this study suggest that identification of pyramided resistance genes is very important for screening hybrid rice breeding lines and germplasms accurately for disease and pest resistance. We will expand their cultivation safely through bioassays against diseases, pests, and disaster in its main export countries.
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등록된 정보가 없습니다.
참고문헌 (51)
참고문헌 신청
Atkinson NJ / 2012 / The interaction of plant biotic and abiotic stresses: from genes to the field / J. Exp. Bot 63:3523~3543
Ballini E / 2008 / A genome-wide meta-analysis of rice blast resistance genes and quantitative trait loci provides new insights into partial and complete resistance / Mol. Plant Microbe Interact 21:859~868
Bonman JM / 1985 / Blast management with rice cultivar mixture / Progress in Upland Rice Research. Proceedings of the 2nd International Upland Rice Conference, 1985 :375~382
Chen S / 2005 / Genetic and physical mapping of Pi37(t), a new gene conferring resistance to rice blast in the famous cultivar St. No. 1 / Theor. Appl. Genet 111:1563~1570
Couch BC / 2002 / A multilocus gene genealogy concordant with host preference indicates segregation of a new species, Magnaporthe oryzae, from M. grisea / Mycologia 94:683~693
Ballini E / 2008 / A genome-wide meta-analysis of rice blast resistance genes and quantitative trait loci provides new insights into partial and complete resistance / Mol. Plant Microbe Interact 21:859~868
Bonman JM / 1985 / Blast management with rice cultivar mixture / Progress in Upland Rice Research. Proceedings of the 2nd International Upland Rice Conference, 1985 :375~382
Chen S / 2005 / Genetic and physical mapping of Pi37(t), a new gene conferring resistance to rice blast in the famous cultivar St. No. 1 / Theor. Appl. Genet 111:1563~1570
Couch BC / 2002 / A multilocus gene genealogy concordant with host preference indicates segregation of a new species, Magnaporthe oryzae, from M. grisea / Mycologia 94:683~693
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