Fig. 3

TADs in 27 soybean accessions. a Hi-C contact map of the 42.5–50.9 Mb region of chromosome 1 in SoyC06, along with eigenvectors, insulation scores, and DI scores. Solid black triangles represent the contact domains identified by Arrowhead, and dashed gray lines represent TAD boundaries. The insulation profile is depicted in yellow and the insulation “delta” vector is depicted in purple in the insulation score panel. b TAD boundary percentage with compartment borders and non-compartment borders. The P value was calculated by two-sided Fisher’s exact test. c Bar plot of the TAD boundary density in A compartments and B compartments in 27 soybean accessions. P value was calculated by Kolmogorov–Smirnov test. d Enrichment of repeat elements, LINE elements, and SINE elements around TAD boundaries in 27 soybean accessions. e Enrichment of the lengths and numbers of L1 and RTE fragments around TAD boundaries in 27 soybean accessions