A High-Density SNP and SSR Consensus Map Reveals Segregation Distortion Regions in Wheat

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dc.contributor.author Li, C. L.
dc.contributor.author Bai, Guihua H.
dc.contributor.author Chao, S. M.
dc.contributor.author Wang, Z. H.
dc.date.accessioned 2016-03-30T01:38:05Z
dc.date.available 2016-03-30T01:38:05Z
dc.identifier.uri http://hdl.handle.net/2097/32207
dc.description Citation: Li, C. L., Bai, G. H., Chao, S. M., & Wang, Z. H. (2015). A High-Density SNP and SSR Consensus Map Reveals Segregation Distortion Regions in Wheat. Biomed Research International, 10. doi:10.1155/2015/830618
dc.description Segregation distortion is a widespread phenomenon in plant and animal genomes and significantly affects linkage map construction and identification of quantitative trait loci (QTLs). To study segregation distortion in wheat, a high-density consensus map was constructed using single nucleotide polymorphism (SNP) and simple sequence repeat (SSR) markers by merging two genetic maps developed from two recombinant-inbred line (RIL) populations, Ning7840 x Clark and Heyne x Lakin. Chromosome regions with obvious segregation distortion were identified in the map. A total of 3541 SNPs and 145 SSRs were mapped, and the map covered 3258.7 cM in genetic distance with an average interval of 0.88 cM. The number of markers that showed distorted segregation was 490 (18.5%) in the Ning7840 x Clark population and 225 (10.4%) in the Heyne x Lakin population. Most of the distorted markers (630) were mapped in the consensus map, which accounted for 17.1% of mapped markers. The majority of the distorted markers clustered in the segregation distortion regions (SDRs) on chromosomes 1B, 2A, 2B, 3A, 3B, 4B, 5A, 5B, 5D, 6B, 7A, and 7D. All of the markers in a given SDR skewed toward one of the parents, suggesting that gametophytic competition during zygote formation was most likely one of the causes for segregation distortion in the populations.
dc.relation.uri https://doi.org/10.1155/2015/830618
dc.rights Attribution 3.0 Unported (CC BY 3.0)
dc.rights.uri http://creativecommons.org/licenses/by/3.0/
dc.subject Triticum-Aestivum L.
dc.subject Genetic-Linkage Map
dc.subject Quantitative Trait Loci
dc.subject Maximum-Likelihood Models
dc.subject Recombinant Inbred Lines
dc.subject Polymorphism
dc.title A High-Density SNP and SSR Consensus Map Reveals Segregation Distortion Regions in Wheat
dc.type Article
dc.date.published 2015
dc.citation.doi 10.1155/2015/830618
dc.citation.issn 2314-6133
dc.citation.jtitle Biomed Research International
dc.citation.spage 10
dc.contributor.authoreid gbai


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Attribution 3.0 Unported (CC BY 3.0) Except where otherwise noted, the use of this item is bound by the following: Attribution 3.0 Unported (CC BY 3.0)

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