Predicted trans-generational development of Wright’s (1922) [48] inbreeding coefficient (<i>f</i>_<i>t</i>) in chronically inbreeding experimental lineages of <i>P</i>. <i>persimilis</i> founded by females mated to a brother, a male from the same population or a male from another population (curve estimation using <i>Populus</i> 5.5 [51]).

Assumed female to male inbreeding coefficients (f0) of the parental generation (F0) were 0.1 for sibling and same population mates and 0 for different population mates. Accordingly, f1 was 0, 0.125 and 0.275 for offspring (F1) of founders mated to males from different populations, the same population and siblings, respectively [50].