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Table 2 Estimation of QTL positions and main effects with Models I, II and III a

From: A new mapping method for quantitative trait loci of silkworm

QTLb

Chr.

Pos.

A

D

Power

  

Par.

Est.( SD )

Par.

Est.( SD )

Par.

Est.( SD )

   
   

I

II

III

 

I

II

III

 

I

II

III

I

II

III

Q1

1

44

44.02 (3.14)

44.07 (3.43)

44.02 (3.14)

3.88

3.88 (0.38)

3.92 (0.52)

3.91 (0.43)

-2.3

-2.21 (0.53)

-2.27 (0.73)

-2.22 (0.60)

96.7

93.3

96.7

Q2

2

45

45.20 (4.09)

45.36 (5.40)

45.20 (4.09)

-2.4

-2.43 (0.42)

-2.48 (0.54)

-2.48 (0.48)

1.9

1.80 (0.51)

1.83 (0.76)

1.84 (0.61)

91

84.3

91

Q3

3

50

50.18 (2.13)

50.21 (3.27)

50.18 (2.13)

3.2

3.25 (0.38)

3.29 (0.48)

3.33 (0.44)

2.1

2.05 (0.52)

2.13 (0.74)

2.09 (0.61)

98.3

94.7

98.3

Q4

4

73

73.24 (4.23)

73.29 (5.77)

73.24 (4.23)

-2.8

-2.67 (0.41)

-2.74 (0.50)

-2.71 (0.44)

-1.9

-1.84 (0.53)

-1.87 (0.73)

-1.85 (0.60)

92

87.7

92

Q5

5

15

15.28 (6.40)

16.52 (7.94)

15.28 (6.40)

1.9

1.98 (0.36)

2.17 (0.52)

2.13 (0.42)

0

-0.01 (0.55)

-0.09 (0.85)

-0.08 (0.67)

62.7

49.7

62.7

Q6

2

75

-

-

-

0

-

-

-

0

-

-

-

-

-

-

Q7

4

24

-

-

-

0

-

-

-

0

-

-

-

-

-

-

  1. a Pos. (position): the distance (cM) between the QTL and the first marker on the same chromosome; A: additive effect; D: dominance effect; Chr. (chromosome): the chromosome on which the QTL is located; Power: the percentage of the QTL that is detected correctly to be significant at 0.05 and within the 95% confidence interval; Par. (parameter): the true parameter value in simulations; Est.: the estimate of parameter; SD: the standard deviation of the estimate from the true value that is listed in the parenthesis where applicable; I (Model I): model (1) (silkworm F2 model); II (Model II): the normal chiasmate F2 model; III(Model III): the reduced version of model (1) without all epistatic effects and their interaction effects with sex.
  2. b Q6 and Q7 are two QTLs without main effects, and thus could not been detected by the model of QTL main effects.