Table 1 Eigenvalues, variance, cumulative variance, and principal component scores (Eigenvectors) of the first ten components of genetic divergence in a panel of 173 D. rotundata accessions.

From: Comparative assessment of genetic diversity matrices and clustering methods in white Guinea yam (Dioscorea rotundata) based on morphological and molecular markers

Variables

PC1

PC2

PC3

PC4

PC5

PC6

PC7

PC8

PC9

PC10

Days to start senescence

0.21

0.79

− 0.14

0.18

0.15

0.02

− 0.19

0.04

0.11

0.02

Days to flowering

0.06

0.59

0.07

0.15

0.14

− 0.19

0.12

0.24

− 0.15

0.18

Days to maturity

0.29

0.67

− 0.01

0.25

0.04

0.10

− 0.04

0.04

0.11

0.04

Number of stems

− 0.30

0.07

0.72

− 0.09

0.00

0.22

0.01

− 0.19

0.18

− 0.03

Stem diameter

0.51

− 0.24

− 0.26

0.18

− 0.01

− 0.34

− 0.17

0.25

− 0.09

0.32

YAD (AUDPC value)

− 0.21

0.01

0.37

− 0.20

− 0.04

− 0.38

0.09

0.08

− 0.04

0.10

YMV (AUDPC value)

− 0.10

0.78

0.02

0.27

0.10

− 0.21

− 0.20

− 0.06

0.07

0.12

Plant vigor

0.55

− 0.23

0.27

− 0.04

− 0.15

− 0.25

− 0.10

0.04

− 0.16

0.19

Plant sex

0.53

− 0.06

0.20

0.41

0.21

− 0.14

− 0.06

0.10

− 0.01

− 0.52

Flowering intensity

0.48

− 0.10

0.13

0.01

0.00

− 0.20

− 0.47

− 0.17

− 0.32

− 0.49

Number of tubers plant−1

− 0.10

0.07

0.78

0.19

− 0.20

0.27

0.12

0.10

− 0.13

0.08

Tuber yield (kg plant−1)

0.91

0.01

0.24

− 0.10

− 0.10

0.07

0.08

− 0.02

0.12

0.08

Tuber yield (t ha−1)

0.91

0.01

0.23

− 0.09

− 0.09

0.08

0.08

− 0.02

0.12

0.08

Average tuber weight (kg)

0.91

− 0.02

− 0.04

− 0.18

− 0.04

− 0.05

0.02

− 0.06

0.14

0.09

Tuber appearance

0.16

0.40

0.21

− 0.53

− 0.21

0.02

0.02

0.16

− 0.11

− 0.14

Spines on tuber

0.38

− 0.07

0.15

0.33

0.00

0.22

0.01

− 0.48

− 0.10

0.18

Tuber cracks

− 0.28

− 0.53

− 0.08

0.14

− 0.10

− 0.19

0.06

− 0.05

0.37

− 0.01

Tuber hairiness

0.42

− 0.15

− 0.03

0.29

0.41

0.40

0.03

− 0.33

− 0.15

0.05

Canopy architecture

− 0.04

− 0.04

0.43

− 0.19

0.14

0.16

− 0.45

0.42

0.31

− 0.05

Leaf density

0.76

− 0.17

0.21

0.13

− 0.22

0.03

0.22

0.17

− 0.11

0.05

Leaf shape

− 0.38

0.26

− 0.17

− 0.28

0.04

0.38

0.20

0.00

0.02

− 0.21

Senescence class

− 0.42

− 0.02

0.30

− 0.16

0.22

− 0.35

− 0.06

− 0.37

0.07

0.25

Spines on stem

0.18

− 0.22

− 0.17

− 0.18

0.40

0.46

0.00

0.31

− 0.20

0.25

Inflorescence type

0.22

− 0.10

0.05

0.39

0.19

− 0.06

0.34

0.17

0.59

− 0.12

Stem color

− 0.08

0.13

− 0.07

0.19

− 0.37

− 0.14

0.59

0.05

− 0.22

− 0.17

Tuber length

0.65

0.00

− 0.15

− 0.48

0.36

− 0.16

0.21

− 0.13

0.10

− 0.10

Tuber width

0.70

0.03

− 0.34

− 0.28

− 0.29

0.09

− 0.08

− 0.14

0.23

− 0.04

Tuber area

− 0.05

0.00

− 0.26

0.23

− 0.71

0.30

− 0.35

0.02

0.12

0.07

Tuber flesh oxidation

0.28

0.57

− 0.08

− 0.02

0.07

0.04

0.10

0.13

− 0.12

− 0.04

Dry matter content

− 0.04

− 0.65

0.02

0.18

0.21

0.07

− 0.03

0.33

− 0.13

− 0.03

Eigenvalue

6.26

3.56

2.26

1.78

1.63

1.51

1.34

1.21

1.13

1.01

% variance

20.87

11.85

7.55

5.94

5.43

5.05

4.45

4.05

3.76

3.38

Cumulative variance (%)

20.87

32.72

40.27

46.20

51.64

56.68

61.14

65.18

68.94

72.32

  1. PC principal component, YAD yam anthracnose disease, YMV yam mosaic virus, AUDPC area under disease progression curve.