Fig. 4.

Model suggesting how differences in key geographical and topological factors, and in many associated abiotic environmental characters commonly reported to enhance anthocyanin levels in plants, may produce environmentally correlated pseudo-intraspecific genome size variation. Note, this may apply to many cytosolic compounds beside anthocyanin which interfere with DNA staining for nuclear DNA content estimation, for example furanocoumarins (Walker et al., 2006).