The Flax Genome is a comprehensive compilation of most recent studies focused on reference genome, genetic resources and molecular diversity, breeding, QTL mapping, gene editing tools, functional genomics and metabolomics, molecular breeding via genomic selection, and genomic resources. The flax genome reference sequences and the new genome assemblies are presented. A list of flax QTL and candidate genes associated with more than 35 traits, including yield and agronomic, seed quality and fatty acid composition, fibre quality and yield, abiotic stress, and disease resistance traits, are summarized. A QTL- based genomic selection strategy and genome¿editing tools are systematically introduced. In addition, huge amounts of flax genomic resources