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著者 Wang Y., Wang D., Deng X., Liu J., Sun P., Liu Y., Huang H., Jiang N., Kang H., Ning Y., Wang Z., Xiao Y., LIU X., Liu E., Dai L., Wang G.L.
タイトル Molecular Mapping of the Blast Resistance Genes Pi2-1 and Pi51(t) in the Durably Resistant Rice 'Tianjingyeshengdao'.
Abstract:
ABSTRACT Tianjingyeshengdao' (TY) is a rice cultivar with durable resistance to populations of Magnaporthe oryzae (the causal agent of blast) in China. To understand the genetic basis of its resistance to blast, we developed a population of recombinant inbred lines from a cross between TY and the highly susceptible 'CO39' for gene mapping analysis. In total, 22 quantitative trait loci (QTLs) controlling rice blast resistance were identified on chromosomes 1, 3, 4, 5, 6, 9, 11, and 12 from the evaluation of four disease parameters in both greenhouse and blast nursery conditions. Among these QTLs, 19 were contributed by TY and three by CO39. Two QTL clusters on chromosome 6 and 12 were named Pi2-1 and Pi51(t), respectively. Pi2-1 was detected under both growth chamber and natural blast nursery conditions, and explained 31.24 to 59.73% of the phenotypic variation. Pi51(t) was only detected in the natural blast nursery and explained 3.67 to 10.37% of the phenotypic variation. Our results demonstrate that the durable resistance in TY is controlled by two major and seven minor genes. Identification of the markers linked to both Pi2-1 and Pi51(t) in this study should be useful for marker-aided selection in rice breeding programs as well as for molecular cloning of the identified resistance genes.
掲載誌 Phytopathology
Country
刊数 102(8)
ページ 779-86
発刊年 2012
PubMed ID 22779744
PubMed Central ID -
DOI -
URL -
関連情報
遺伝子 PI51 PIZ
INSD -
系統 野生イネ
コアコレクション 		-
突然変異系統(遺伝研 Collection) -
種子不稔系統 -
致死変異体系統 -
組織別発生段階
- 突然変異系統(遺伝子) 		-
栽培イネ品種(遺伝研 Collection) -
組織別発生段階 -
/rice/oryzabase