Fig. 6
From: Optimizing genomic reference populations to improve crossbred performance
Estimate of the effective number of independent chromosome segments (\({M}_{e}\)) between the purebred selection candidates and different reference populations. The reference population consisted of purebreds (PB), two-way crossbreds (CB) derived from the same sires as used in the nucleus (2wayCB_TOP), different sires with zero (2wayCB) or one multiplication step (2wayCB_1MP), four-way crossbreds derived from the same sires as used in the nucleus population (4wayCB_TOP), different sires with zero (4wayCB), one (4wayCB_1MP), or two multiplication steps (4wayCB_2MP). The purebred-crossbred correlation was equal to 0.75 (a and b) or 0.5 (c and d). Averages were calculated across 50 replicates