Fig. 5From: Genetic origin and composition of a natural hybrid poplar Populus × jrtyschensis from two distantly related speciesScenarios that were tested for the origin of P. × jrtyschensis (pj), P. nigra (pn) and P. laurifolia (pl). N1, N2 and N3 represent current effective population sizes of P. nigra, P. laurifolia and P. × jrtyschensis, respectively. For Scenarios 1–3, t1 is the time of origin of P. × jrtyschensis. t2 represents divergence time between P. nigra and P. laurifolia in “generations ago” and NA is the effective population size of the common ancestor of the three speciesBack to article page