Table 6 Estimates of QTL positions and effects under three different heritabilities

From: Mixed linear model approach for mapping quantitative trait loci underlying crop seed traits

QTL

Chr.

Pos.

am

ae

Power (%)

  

Par.

Est. (s.d.)

Par.

Est. (s.d.)

Par.

Est. (s.d.)

   
   

I

II

III

 

I

II

III

 

I

II

III

I

II

III

Q1

1

75

74.95 (2.19)

74.95 (2.25)

74.93 (2.89)

0

0.11 (0.62)

0.11 (0.64)

0.14 (0.82)

3.77

3.55 (0.50)

3.55 (0.51)

3.52 (0.64)

100

100

99.2

Q2

2

34

34.05 (2.82)

34.06 (2.86)

34.19 (3.26)

3.5

3.14 (0.86)

3.13 (0.88)

3.19 (0.99)

−3.5

−3.14 (0.63)

−3.13 (0.65)

−3.18 (0.67)

100

100

98.6

Q3

3

44

44.29 (1.32)

44.30 (1.36)

44.28 (1.53)

3.3

3.40 (0.66)

3.40 (0.68)

3.40 (0.87)

4.1

3.88 (0.43)

3.88 (0.45)

3.87 (0.59)

100

100

100

Q4

4

53

53.09 (3.36)

53.11 (3.44)

52.93 (3.97)

2

1.96 (0.65)

1.98 (0.66)

2.12 (0.79)

0

0.01 (0.42)

0.01 (0.43)

−0.03 (0.59)

97.8

97.2

76.8

Q5

5

6

5.98 (2.03)

6.00 (2.09)

6.10 (2.49)

0

−0.02 (0.66)

−0.03 (0.67)

−0.05 (0.89)

−3.3

−3.10 (0.51)

−3.08 (0.52)

−3.06 (0.66)

100

100

100

Q6

5

77

77.00 (1.60)

77.03 (1.61)

77.08 (1.89)

3.2

3.16 (0.66)

3.16 (0.67)

3.17 (0.85)

3.3

3.12 (0.46)

3.12 (0.46)

3.11 (0.58)

100

100

100

  1. Abbreviations: Chr., the number of simulated chromosome; Est., the estimate of parameter; Par., the true parameter value in simulations; Pos., position (the distance (cM) between the QTL and the first marker on the same chromosome); Power, the percentage of the QTL that is detected correctly to be significant at 0.05 and/or within the 95% confidence interval; QTL, quantitative trait locus.
  2. I, II and III stand for three different heritabilities of 75%, 50% and 10%, respectively, that are the proportions of the total phenotypic variation ascribed to QTL main effects and QE interaction effects; am and ae are maternal additive and endosperm effects, respectively. The s.d. indicates the standard deviation for the estimate of the true parameter value.
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