Fig. 5

Collinearity analysis of the PtrNAC genes. In the circular genome alignment diagram, gray connecting arcs indicate genome-wide syntenic regions, while orange connecting bands specifically highlight conserved homologous regions containing PtrNAC genes. The peripheral radial layout illustrates the linear distribution pattern of P. trifoliata NAC gene family members along chromosomes, with a chromosomal scale ring providing megabase (Mb)-level physical position references