Table 6 Phenotypic correlations (below the diagonal) and genotypic correlations (above the diagonal) among all traits at individual sites of the nine triploid hybrid clones

Yanzhou

FL

0.59

0.77*

0.87*

–

–

–

FW

0.55

−0.25

0.97*

–

–

–

FL/W

0.69*

− 0.23

0.16

–

–

–

C

0.77*

0.88*

0.14

–

–

–

H

0.10

−0.14

0.24

− 0.29

–

–

DBH

0.26

− 0.34

0.59

− 0.05

0.24

–

SV

0.29

−0.49

0.75*

−0.12

0.74*

0.90**

Gaotang

FL

0.92*

–

0.71

0.65

0.32

0.35

FW

0.78*

–

0.99**

0.25

−0.19

−0.16

FL/W

0.68*

0.08

–

–

–

–

C

0.63

0.88**

0.04

−0.01

−0.34

−0.30

H

0.55

0.21

0.64

−0.01

0.82*

0.93*

DBH

0.27

−0.16

0.60

−0.30

0.68*

1.20**

SV

0.29

−0.13

0.61

−0.26

0.77*

0.98**

Xiangfen

FL

0.96**

0.63

0.84*

0.52

0.66

0.56

FW

0.80**

−0.27

0.96**

−0.01

0.07

0.03

FL/W

0.42

−0.19

−0.19

1.04*

1.16*

1.03*

C

0.68*

0.82**

−0.13

− 0.32

−0.11

− 0.21

H

0.41

−0.01

0.69*

−0.26

1.37**

1.31**

DBH

0.46

0.05

0.68*

−0.08

0.95**

1.51**

SV

0.42

0.02

0.65

−0.16

0.98**

0.99**

Pinggu

FL

–

–

0.75*

1.10**

0.56

0.62

FW

0.49

–

–

–

–

–

FL/W

0.81**

−0.11

–

–

–

–

C

0.68*

0.86**

0.20

0.40

−0.19

−0.16

H

0.88**

0.17

0.90**

0.31

1.05**

1.11**

DBH

0.51

−0.25

0.80*

−0.18

0.80**

1.16**

SV

0.54

−0.24

0.83**

−0.15

0.83**

0.99**

Zhengzhou

FL

0.63

0.89*

0.68

0.49

0.46

0.43

FW

0.54

−0.33

0.93**

−0.23

−0.52

− 0.53

FL/W

0.68*

−0.26

−0.06

0.85*

1.10*

1.07*

C

0.58

0.82**

−0.05

0.29

−0.20

− 0.10

H

0.44

−0.21

0.69*

0.26

0.97*

1.08**

DBH

0.34

−0.40

0.74*

−0.15

0.76*

1.42**

SV

0.34

−0.42

0.75*

−0.08

0.88**

0.97**

Taiyuan

FL

0.97**

1.01*

0.83**

0.33

0.24

0.34

FW

0.82**

0.36

1.01**

0.17

−0.28

−0.11

FL/W

0.76*

0.25

0.43

0.47

0.84

0.83

C

0.82**

0.91**

0.34

−0.05

−0.23

− 0.15

H

0.32

0.15

0.37

−0.05

0.67

0.82*

DBH

0.21

−0.23

0.61

−0.22

0.62

1.09**

SV

0.31

−0.09

0.63

−0.15

0.79*

0.97**