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Home > Archive>Volume 19, Issue 4, 2018 >598-611. DOI:10.13430/j.cnki.jpgr.20171205003
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Association mapping of Fusarium head blight resistance using the derivatives of core parent Funo in wheat
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1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ; 2 College of Agriculture, Nanjing Agricultural University, Nanjing 210095,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;,1Institute of Germplasm Resources and Biotechnology, Jiangsu Academy of Agricultural Sciences / National Crop Germplasm Resources Infrastructure (Jiangsu), Ministry of Science and Technology, Nanjing 210014 ;

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    Abstract:

    Fusarium head blight (FHB) is an important disease affecting the yield and quality of wheat worldwide. Exploration of elite alleles and development resistant cultivars are considered as the most economical and safety method in controlling the disease. In this study, the resistance to spread of FHB was evaluated using Funo and its 264 derivatives in 5 environments. Genetic diversity, population structure and association analysis were studied based on 52 primers distributed on 19 chromosomes. A total of 19 markers were detected to be significantly associated with FHB scores. Of which, five loci on chromosomes 2B, 2D, 3A, 3B and 5A were identified at least in two of five environments and for average number of disease spikelets (NDS) of the five environments. The Xgwm493 linked to Fhb1 on chromosome 3B, and Xbarc117 closely linked to Fhb5 on the chromosome 5A were detected to be associated with FHB resistance, respectively. The result of calculating phenotypic effects of allelic variation showed that eleven alleles were detected to be associated with FHB resistance and among them, three alleles had reducing effect, with the Xgwm493-180 having the larger effect; seven alleles had improving effect, with the Xbarc117-225 showing the largest effect, and an allele had no effect. It was also found that the NDS was negatively linear correlated with the number of favorable alleles carried by the materials.

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History
  • Received:December 05,2017
  • Revised:March 29,2018
  • Adopted:January 05,2018
  • Online: July 16,2018
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