Table 1

Analysis of molecular variance (AMOVA) for the extraction of SNP variation among groups (populations) and among individuals within populations

Groups

Source of variation

d.f.

Sum of squares

Variance components

Percentage of variation


K = 2 (2 pops and mixed)

Among populations

2

6788.84

23.91

11.74*

Within populations

897

161224.47

179.74

88.26

Total

899

168013.30


K = 3 (3 pops and mixed)

Among populations

3

9812.27

19.27

9.84*

Within populations

896

158201.03

176.56

90.16

Total

899

168013.30


K = 4 (4 pops and mixed)

Among populations

4

12807.29

21.69

11.12*

Within populations

895

155206.01

173.41

88.88

Total

899

168013.30

195.10


K = 5 (5 pops and mixed)

Among populations

5

15428.74

24.69

12.64*

Within populations

894

152584.56

170.68

87.36

Total

899

168013.30

195.36


K = 6 (6 pops and mixed)

Among populations

6

17184.95

27.57

14.03*

Within populations

893

150828.35

168.90

85.97

Total

899

148013.30

196.47


Cluster analyses -3 groups

Among populations

2

3729.07

7.35

3.86*

Within populations

897

164284.23

183.15

96.14

Total

899

168013.30

190.50


Cluster analyses-5 groups

Among populations

4

7377.54

10.08

5.32*

Within populations

895

160635.77

179.48

94.68

Total

899

168013.30

189.56


Cluster analyses-6 groups

Among populations

5

9832.12

12.90

6.80*

Within populations

894

158181.18

176.94

93.20

Total

899

168013.30

189.84


Heterotic groups (K = 2)

Among heterotic groups

2

4281.98

22.46

11.29*

Within heterotic groups

437

77179.51

176.61

88.72

Total

439

81461.49


Heterotic groups (K = 3)

Between heterotic groups

3

7354.74

22.76

11.81*

Within heterotic groups

436

74106.75

169.97

88.19

Total

439

81461.49

192.73


Heterotic groups-breeders (A, B)

Between heterotic groups

1

676.51

2.29

1.22*

Within heterotic groups

438

80784.98

184.44

98.78

Total

439

81461.49

186.73


*p-value < 0.0001

Semagn et al. BMC Genomics 2012 13:113   doi:10.1186/1471-2164-13-113

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