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Major QTL Conferring Resistance to Rice Bacterial Leaf Streak
作者姓名:CHEN  Cai-hong  ZHENG  Wei  HUANG  Xiao-man  ZHANG  Duan-pin  LIN  Xing-hua
作者单位:[1]Key Laboratory of Crop Genetic Improvement, National Center of Molecular Breeding, Huazhong Agricultural University, Wuhan 430070, P.R.China [2]Rice Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, P.R.China
基金项目:Acknowledgements This work was supported by the Startup Foundation of Research for Returnees Studying Abroad from Ministry of Education, China.
摘    要:Bacterial leaf streak (BLS) is one of the important limiting factors to rice production in southern China and other tropical and sub-tropical areas in Asia. Resistance to BLS was found to be a quantitative trait and no major resistant gene was located in rice until date. In the present study, a new major quantitative trait locus (QTL) conferring resistance to BLS was identified from a highly resistant variety Dular by the employment of Dular/Balilla (DB) and Dular/IR24 (DI) segregation populations and was designated qBLSR-11-1. This QTL was located between the simple sequence repeat (SSR) markers RM120 and RM441 on chromosome 11 and could account for 18.1-21.7% and 36.3% of the variance in DB and DI populations, respectively. The genetic pattern of rice resistance to BLS was discussed.

关 键 词:Oryza  sativa    Xanthomonas  oryzae  pv.  oryzicola    quantitative  trait  locus  (QTL)    simple  sequence  repeat  (SSR)
收稿时间:2005-06-03
修稿时间:2006-01-06

Major QTL Conferring Resistance to Rice Bacterial Leaf Streak
CHEN Cai-hong ZHENG Wei HUANG Xiao-man ZHANG Duan-pin LIN Xing-hua.Major QTL Conferring Resistance to Rice Bacterial Leaf Streak[J].Agricultural Sciences in China,2006,5(3):216-220.
Authors:CHEN Cai-hong  ZHENG Wei  HUANG Xiao-man  ZHANG Duan-pin  LIN Xing-hua
Institution:1. Key Laboratory of Crop Genetic Improvement, National Center of Molecular Breeding, Huazhong Agricultural University, Wuhan 430070, P.R. China;Rice Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, P.R. China
2. Key Laboratory of Crop Genetic Improvement, National Center of Molecular Breeding, Huazhong Agricultural University, Wuhan 430070, P.R. China
Abstract:Bacterial leaf streak (BLS) is one of the important limiting factors to rice production in southern China and other tropical and sub-tropical areas in Asia. Resistance to BLS was found to be a quantitative trait and no major resistant gene was located in rice until date. In the present study, a new major quantitative trait locus (QTL) conferring resistance to BLS was identified from a highly resistant variety Dular by the employment of Dular/Balilla (DB) and Dular/IR24 (DI) segregation populations and was designated qBLSR-11-1. This QTL was located between the simple sequence repeat (SSR) markers RM120 and RM441 on chromosome 11 and could account for 18.1-21.7% and 36.3% of the variance in DB and DI populations, respectively. The genetic pattern of rice resistance to BLS was discussed.
Keywords:Oryza sativa  Xanthomonas oryzae pv  oryzicola  quantitative trait locus (QTL)  simple sequence repeat (SSR)
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