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Table 2 Estimates of QTL allele substitution effect (), location and efficiency of selection in BC1 and BC4 when frequency of favourable QTL allele in donor line varied and 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 ) = 1.00

2.23

2.23 ± 0.02

2.21 ± 0.01

84.8 ± 0.1

85.0 ± 0.0

1.00 ± 0.00

0.99 ± 0.00

1.48

1.49 ± 0.02

1.47 ± 0.01

85.1 ± 0.2

85.0 ± 0.1

0.99 ± 0.00

0.99 ± 0.00

1.02

0.99 ± 0.02

0.96 ± 0.02

83.0 ± 1.5

82.8 ± 1.5

0.99 ± 0.00

0.98 ± 0.00

p(Q d ) = 0.90

2.23

2.04 ± 0.02

2.00 ± 0.01

85.0 ± 0.1

85.1 ± 0.1

0.90 ± 0.00

0.90 ± 0.00

1.48

1.35 ± 0.02

1.32 ± 0.01

84.8 ± 0.2

84.9 ± 0.1

0.89 ± 0.00

0.89 ± 0.00

1.02

0.95 ± 0.02

0.92 ± 0.01

85.1 ± 0.4

85.0 ± 0.1

0.89 ± 0.00

0.88 ± 0.00

p(Q d ) = 0.75

2.23

1.67 ± 0.02

1.64 ± 0.01

84.9 ± 0.3

85.0 ± 0.1

0.75 ± 0.00

0.74 ± 0.00

1.48

1.12 ± 0.02

1.09 ± 0.01

84.9 ± 0.3

85.1 ± 0.1

0.74 ± 0.00

0.73 ± 0.00

1.02

0.80 ± 0.02

0.76 ± 0.01

84.1 ± 0.7

84.9 ± 0.2

0.72 ± 0.01

0.72 ± 0.00

p(Q d ) = 0.50

2.23

1.14 ± 0.02

1.09 ± 0.01

84.3 ± 0.5

85.0 ± 0.1

0.50 ± 0.00

0.49 ± 0.00

1.48

0.76 ± 0.02

0.72 ± 0.01

82.3 ± 0.2

85.0 ± 0.2

0.48 ± 0.01

0.48 ± 0.01

1.02

0.57 ± 0.02

0.51 ± 0.01

81.2 ± 1.4

85.2 ± 0.4

0.48 ± 0.01

0.47 ± 0.01

  1. a Marker frequencies and QTL frequencies were 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