지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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QTL analysis for blast resistance was carried out using 140 BC_3F_3 lines derived from a cross between Ilpum as a recurrent parent and Moroberekan as a donor parent. 140 BC_3F_3 lines with the parents were inoculated with nine blast isolates.
To identify QTLs for resistance to nine blast isolates, 134 SSR markers showing polymorphisms between the parents were genotyped for the 140 BC_3F_3 lines. A total of 17 resistance QTLs to nine isolates were detected on chromosomes 2, 3, 4, 6,7, 9 and 10. The phenotypic variance explained by each QTL ranged from 8.2% to 26.4%. The Moroberekan alleles contributed the positive effect at these 17 QTL loci. In a previous study, the QTL, Pi45(t) for durable resistance to blast was identified using a sequential planting method. To know the relationship between Pi45(t) and the isolate-specific resistance gene, an F_2 population was developed from a cross between Ilpum and an introgression line harboring Pi45(t). F_3 lines segregating for the Pi45(t) were inoculated to three isolates. F_3 lines from the F_2 plants with the Moroberekan segment at the target region showed resistance to two isolates. This result seems to indicate that the Pi45(t) and the isolate-specific resistance gene are tightly linked or the resistance is controlled by the same gene(s). The markers linked to genes controlling blast resistance would be useful in developing blast resistance lines in the breeding program.
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참고문헌 (24)
참고문헌 신청
Bonman JM / 1992 / Breeding Rice for Resistance to Pests / Ann. Rev. in Phytopathol 30 : 507 ~ 528
Bryan GT / 2000 / A single amino acid difference distinguishes resistant and susceptible alleles of the rice blast resistance gene Pi-ta / Plant Cell 12 : 2033 ~ 2045
Chen DH / 2000 / Characterization of blast resistance in the durably resistant rice cultivar Moroberekan, In Advances in Rice Blast Research / Kluwer Academic Publishers : 17 ~ 27
Chen X / 2006 / A B-lectin receptor kinase gene conferring rice blast resistance / Plant J 46 : 794 ~ 804
Dai LY / 2007 / Recent advances in cloning and characterization of disease resistance genes in rice / J. Integr. Plant Biol 29 : 112 ~ 119
Bryan GT / 2000 / A single amino acid difference distinguishes resistant and susceptible alleles of the rice blast resistance gene Pi-ta / Plant Cell 12 : 2033 ~ 2045
Chen DH / 2000 / Characterization of blast resistance in the durably resistant rice cultivar Moroberekan, In Advances in Rice Blast Research / Kluwer Academic Publishers : 17 ~ 27
Chen X / 2006 / A B-lectin receptor kinase gene conferring rice blast resistance / Plant J 46 : 794 ~ 804
Dai LY / 2007 / Recent advances in cloning and characterization of disease resistance genes in rice / J. Integr. Plant Biol 29 : 112 ~ 119
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