摘要
Genotyping-by-sequencing(GBS) is a new powerful method for affordably acquiring dense genome wide marker data for large sample size populations and has been successfully utilized for genetic studies in a variety of species. In this study,1637 wheat accessions from China and other countries were sequenced using GBS method. On average,5,765,333 reads per line were generated,which is equivalent to ~0.02-fold coverage of the wheat genome for each accession. About 15,000 homogeneous SNPs were identified per line. Phylogenetic tree of all accessions inferred from SNPs showed that the collection mainly has six divergent groups,and the accessions with similar geographical origin or hybrid progenies from the same ancestors(such as progenies of Agropyron elongatum×wheat) usually cluster to the same group. These data shed light on the underlying relationship between different wheat accessions and provided phylogenetic reference for future potential breeding utilization.
Genotyping-by-sequencing(GBS) is a new powerful method for affordably acquiring dense genome wide marker data for large sample size populations and has been successfully utilized for genetic studies in a variety of species. In this study,1637 wheat accessions from China and other countries were sequenced using GBS method. On average,5,765,333 reads per line were generated,which is equivalent to ~0.02-fold coverage of the wheat genome for each accession. About 15,000 homogeneous SNPs were identified per line. Phylogenetic tree of all accessions inferred from SNPs showed that the collection mainly has six divergent groups,and the accessions with similar geographical origin or hybrid progenies from the same ancestors(such as progenies of Agropyron elongatum×wheat) usually cluster to the same group. These data shed light on the underlying relationship between different wheat accessions and provided phylogenetic reference for future potential breeding utilization.
引文