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Table 4 Estimates of QTL allele substitution effect (), location and efficiency of selection in BC1 and BC4 when N = 1000 (se are in italic font).

From: Combined detection and introgression of QTL in outbred populations

α b Locationc Efficiency of selection
  BC1 BC4 BC1 BC4 BC1 BC4
p(Q d ) = 0.90, p(Q r ) = 0.10 and population = 1000
2.23 1.81 ± 0.02 1.77 ± 0.01 85.1 ± 0.2 85.1 ± 0.0 0.91 ± 0.00 0.90 ± 0.00
1.48 1.16 ± 0.02 1.18 ± 0.01 85.2 ± 0.3 84.8 ± 0.1 0.90 ± 0.00 0.90 ± 0.00
1.02 0.84 ± 0.01 0.81 ± 0.01 85.5 ± 0.4 85.3 ± 0.1 0.89 ± 0.00 0.89 ± 0.00
p(Q d ) = 0.75, p(Q r ) = 0.25 and population = 1000
2.23 1.08 ± 0.03 1.05 ± 0.02 81.9 ± 1.7 85.5 ± 0.3 0.80 ± 0.00 0.80 ± 0.00
1.48 0.78 ± 0.02 0.73 ± 0.01 83.2 ± 1.2 84.9 ± 0.3 0.81 ± 0.00 0.80 ± 0.00
1.02 0.54 ± 0.02 0.51 ± 0.01 78.8 ± 1.6 85.0 ± 0.3 0.79 ± 0.00 0.78 ± 0.00
p(Q d ) = 0.90, p(Q r ) = 0.10 and population = 500
2.23 1.80 ± 0.03 1.49 ± 0.02 84.9 ± 0.4 84.8 ± 0.1 0.90 ± 0.00 0.89 ± 0.00
1.48 1.25 ± 0.02 1.02 ± 0.02 83.4 ± 0.9 84.8 ± 0.2 0.89 ± 0.00 0.87 ± 0.01
1.02 0.83 ± 0.03 0.69 ± 0.01 80.5 ± 1.5 85.0 ± 0.4 0.87 ± 0.01 0.85 ± 0.01
p(Q d ) = 0.75, p(Q r ) = 0.25 and population = 500
2.23 1.19 ± 0.03 0.92 ± 0.02 82.5 ± 1.2 85.7 ± 0.3 0.79 ± 0.01 0.79 ± 0.01
1.48 0.78 ± 0.03 0.58 ± 0.01 75.9 ± 2.2 82.9 ± 0.7 0.78 ± 0.01 0.75 ± 0.00
1.02 0.54 ± 0.03 0.42 ± 0.01 68.2 ± 2.7 79.8 ± 1.1 0.76 ± 0.01 0.72 ± 0.01
  1. a Marker frequencies and QTL frequencies are identical in the donor line
  2. b True QTL allele substitution effect; allele substitution effects of 2.23, 1.48 and 1.02 correspond to heritability values of 0.50, 0.31 and 0.17, respectively
  3. c True QTL location corresponds to interval 85