The degree of relatedness was estimated using KING and describes the number of generations between the related accessions. Thumbnail images show FDR-corrected F3 tests of introgression for each of the target individuals. Each cell in the matrix illustrates an F3 test result for the target accession containing introgression from two different sources ( x and y axes); blue color illustrates significant adjusted Z -score ( Z adj; value indicated by color key), indicative of gene flow (or allele sharing via identity by descent 78 ) from the two source accessions to the target, while red color illustrates no support for gene flow. See Extended Data Fig. 7 for corresponding analyses in subEE. In the wild accessions, the dark green background highlights the admixed individuals (Fig. 2b ), while the nonadmixed individuals are highlighted with red background. Relationships follow standard nomenclature (for example, second degree refers to an individuals grandparents, grandchildren and so on, whereas third degree refers to great-grandparents, great-grandchildren and so on).
