Exploring Genome-Wide Diversity in the National Peach (Prunus persica) Germplasm Collection at CITA (Zaragoza, Spain)

Peach (Prunus persica (L.) Batsch) is one of the most produced and studied stone fruits. Many genetic genomic resources are available for this species, including a high-quality genome. More recently, new high-density Illumina peach Single Nucleotide Polymorphism (SNP) chip (9+9K) has been developed by an international consortium as add-on to previous 9K array. In current study, array was used study diversity population structure National Germplasm Collection Agrifood Research Technology Centre Aragon (CITA), located in Zaragoza (northern Spain). To accomplish this, 90 accessions were genotyped using SNP (9+9K). A total 9796 SNPs finally selected analyses. Through Identity-By-Descent (IBD) estimate analysis, 15 different groups with genetically identical individuals identified. The elucidated possible exchange germplasm material among regions, mainly northern regions Spain. This will allow more efficient management classifying valuable preservation benefit forthcoming Genome-Wide Association Studies (GWAS) commercially important fruit traits peach.