Footprints of CsFT locus selection. A, Geographical distribution of three types of CsFT URs. A total of 286 cucumber accessions (Supplemental Data Set S4) were used, consisting of 26 North-African accessions, 43 East-Asian accessions, 70 Southeast-Asian accessions, 25 Xishuangbanna accessions, 32 Russian accessions, 34 European accessions, 24 Central-Asian accessions, and 32 North-American accessions. Distributions of long, short-2, and short-1 URs across geographic areas are shown as pie charts, colored in blue, red, and yellow, respectively, with the allele numbers indicated. The colored lines represent the four cucumber populations: Indian (green), Xishuangbanna (blue), Eurasian (red), and East Asian (yellow). B, The genomic region around the CsFT locus shows evidence of a domestication sweep. The distribution of π is shown for the Indian (green), Xishuangbanna (blue), Eurasian (red), and East-Asian (yellow) populations. The CsFT locus is located in the pink region.