Table 1 Number of molecular markers, genetic distance, marker density in each linkage group of the Brassica napus TNDH 2041-map.

From: QTL meta-analysis of root traits in Brassica napus under contrasting phosphorus supply in two growth systems

Linkage Group

Number of molecular Markers

Genetic Distance (cM)

Marker density (markers/cM)

SNP bin

SNP bin density (markers/cM)

Original markers

A1

142

89.4

1.63

132

1.48

10

A2

107

120.6

0.91

91

0.75

16

A3

158

131.8

1.44

121

0.92

37

A4

105

82.0

1.31

91

1.11

14

A5

105

112.7

0.83

94

0.83

11

A6

141

128.8

1.15

120

0.93

21

A7

131

104.9

1.30

108

1.03

23

A8

81

83.8

0.98

67

0.80

14

A9

153

139.7

1.10

102

0.73

51

A10

104

75.9

1.37

85

1.12

19

C1

97

92.6

1.06

90

0.97

7

C2

85

74.4

0.85

78

1.05

7

C3

127

142.4

0.84

104

0.73

23

C4

95

116.2

0.80

79

0.68

16

C5

62

133.4

0.47

52

0.39

10

C6

78

106.2

0.73

59

0.56

19

C7

83

93.5

0.76

67

0.72

16

C8

107

108.1

0.91

98

0.91

9

C9

80

141.4

0.57

60

0.42

20

A genome

1227

1069.6

1.18

1011

0.95

216

C genome

814

1008.3

0.76

687

0.68

127

Total(A + C)

2041

2077.9

0.97

1698

0.82

343

  1. SNP bin, the smallest unit where chromosome recombination events happen. Original markers, SSR, RFLP and AFLP markers.