WP6 aims to develop genomic tools for apple and peach breeding. It has created a 384-SNP array and 20K-SNP array for apple. It validated the IPSC peach 9K-SNP array. Future plans include resequencing 48 apple genotypes for SNP discovery, developing a 400K-600K apple SNP chip, and testing GBS for genome-wide association studies in apple. Protocols for marker-assisted selection are being updated. The workplan interacts with other RosBREED work packages on mapping populations, germplasm, and bioinformatics.