Diversity analysis of SNPs and methylation across wheat varieties. Epigenomic variation across a polyploid wheat diversity collection

We survey genotype and DNA methylation across the core Watkins bread wheat landrace collection. We observe high transposable element variability and expansion, most frequently in retrotransposons, alongside high epigenomic diversity; while there is an association between methylation and genotype, methylation is a standalone source of variation between closely related accessions. Both methylation and genotype are influenced by geographic origin.