Table 6. Phenotypic correlations for culm lodging resistance index, lodging score and culm characters^α.

CLRI

LS

PH

L-I

L-II

D-I

D-II

WT-I

WT-II

F-I

F-II

LC

CC

SC

WSC/N

CLRI

1.00

LS

-0.79**

1.00

PH

-0.44

0.54*

1.00

L-I

-0.67**

0.74**

0.77**

1.00

L-II

-0.23

0.13

-0.49*

-0.40

1.00

D-I

0.52*

-0.39

0.41

0.05

-0.65**

1.00

D-II

0.40

-0.22

0.49*

0.30

-0.83**

0.91**

1.00

WT-I

0.90**

-0.87**

-0.46*

-0.69**

-0.22

0.51*

0.38

1.00

WT-II

0.78**

-0.77**

-0.47*

-0.76**

0.18

0.44

0.18

0.81**

1.00

F-I

0.85**

-0.80**

-0.49*

-0.81**

0.09

0.42

0.17

0.80**

0.90**

1.00

F-II

0.86**

-0.75**

-0.47*

-0.78**

0.13

0.43

0.17

0.77**

0.90**

0.98**

1.00

LC

0.59**

-0.54*

0.15

-0.26

-0.46*

0.62**

0.53*

0.58**

0.52*

0.54*

0.51*

1.00

CC

0.66**

-0.68**

-0.13

-0.52*

-0.20

0.43

0.28

0.66**

0.68**

0.65**

0.62**

0.92**

1.00

SC

0.34

-0.25

0.48*

0.01

-0.52*

0.70**

0.64**

0.28

0.35

0.35

0.33

0.75**

0.62**

1.00

WSC/N

0.89**

-0.77**

-0.53*

-0.57*

-0.27

0.37

0.33

0.82**

0.55*

0.67**

0.67**

0.34

0.43

0.10

1.00

^α CLRI: culm lodging resistance index; LS: lodging score; PH: plant height; L-I: length of first basal internode; L-II: Length of second basal internode; D-I: diameter of first basal internode; D-II: diameter of second basal internode; WT-I: wall thickness of first basal internode; WT-II: wall thickness of second basal internode; F-I: filling degree of first basal internode; F-II: filling degree of second basal internode; LC: lignin content; CC: cellulose content; SC: silicon content; WSC/N: the ratio of water-solute carbohydrates to nitrogen.

* F-test significant at 5% level.

** F-test significant at 1% level.