Figure 4.

Multidimensional scanning for 2,815 maize inbred lines. Genetic relationships between the maize inbred lines preserved at the NCRPIS germplasm bank visualized using a principal coordinate analysis of the distances matrix. The × and Y axes represent PCo1 and PCo2 respectively. Colors are assigned based on (A) population structure or (B) breeding program. Inbred lines obtained directly from landraces without selection are highlighted in red to serve as reference.

Romay et al. Genome Biology 2013 14:R55   doi:10.1186/gb-2013-14-6-r55
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