Table 1 Clone mean values, standard error (SE) of the mean, ranges of maximum and minimum values, and coefficients of phenotypic variation (CV p %) for fiber properties and growth traits at the six clonal trials

Yanzhou

FL (mm)

0.77 ± 0.04

0.68 ± 0.84

5.3

0.67 ± 0.01

0.65 ± 0.69

FW (μm)

24.7 ± 0.9

23.2 ± 26.6

3.5

22.7 ± 1.2

21.9 ± 25.0

FL/W

31.3 ± 1.4

28.4 ± 33.4

4.5

29.4 ± 1.1

27.6 ± 30.7

C (μg/m)

105.8 ± 8.9

86.5 ± 124.3

8.4

91.8 ± 10.9

83.3 ± 113.4

H (m)

12.5 ± 1.2

10.6 ± 15.4

9.7

9.9 ± 0.5

9.2 ± 10.6

DBH (cm)

10.7 ± 1.0

8.5 ± 13.3

9.4

9.0 ± 1.2

7.1 ± 10.4

SV (dm3)

48.2 ± 11.0

26.2 ± 70.4

22.9

28.7 ± 8.2

16.4 ± 39.5

Gaotang

FL (mm)

0.82 ± 0.04

0.73 ± 0.90

4.9

0.69 ± 0.03

0.64 ± 0.74

FW (μm)

24.2 ± 0.9

22.6 ± 26.0

3.6

22.1 ± 0.5

21.5 ± 22.7

FL/W

33.9 ± 1.5

30.7 ± 37.1

4.3

31.1 ± 1.2

29.7 ± 32.6

C (μg/m)

102.2 ± 7.4

85.7 ± 118.9

7.3

85.5 ± 3.0

82.5 ± 89.0

H (m)

13.6 ± 1.2

9.4 ± 16.0

8.9

12.0 ± 0.6

11.1 ± 12.9

DBH (cm)

11.6 ± 1.5

7.8 ± 14.9

12.9

9.7 ± 0.8

8.6 ± 10.8

SV (dm3)

61.8 ± 18.4

23.6 ± 113.9

29.8

38.6 ± 7.3

28.1 ± 48.9

Xiangfen

FL (mm)

0.80 ± 0.04

0.73 ± 0.90

5.0

0.67 ± 0.02

0.64 ± 0.71

FW (μm)

24.2 ± 0.9

22.6 ± 26.0

3.7

22.0 ± 0.7

21.3 ± 22.9

FL/W

33.1 ± 1.1

30.3 ± 35.4

3.4

30.4 ± 1.6

28.1 ± 32.7

C (μg/m)

99.6 ± 9.3

68.6 ± 120.3

9.3

82.0 ± 5.7

76.5 ± 92.4

H (m)

13.2 ± 1.1

11.4 ± 15.8

8.4

11.5 ± 0.4

10.8 ± 12.1

DBH (cm)

11.7 ± 1.2

9.0 ± 14.6

10.3

10.0 ± 0.7

8.8 ± 10.7

SV (dm3)

60.8 ± 15.6

31.5 ± 107.1

25.7

39.4 ± 5.7

28.8 ± 46.4

Pinggu

FL (mm)

0.76 ± 0.04

0.67 ± 0.85

5.3

0.61 ± 0.02

0.58 ± 0.63

FW (μm)

26.1 ± 1.0

23.7 ± 28.8

3.8

22.9 ± 0.2

22.5 ± 23.1

FL/W

29.1 ± 1.6

25.8 ± 31.7

5.5

26.5 ± 0.9

25.2 ± 28.1

C (μg/m)

112.5 ± 7.8

97.8 ± 129.4

6.9

85.2 ± 2.2

80.9 ± 87.2

H (m)

11.4 ± 1.5

7.8 ± 15.8

13.2

10.6 ± 0.9

9.1 ± 11.8

DBH (cm)

13.8 ± 2.2

8.7 ± 19.3

15.9

10.4 ± 1.3

8.2 ± 11.9

SV (dm3)

75.3 ± 28.0

21.1 ± 133.4

37.2

39.8 ± 10.6

21.3 ± 52.9

Zhengzhou

FL (mm)

0.81 ± 0.04

0.74 ± 0.89

4.9

0.68 ± 0.03

0.64 ± 0.72

FW (μm)

25.3 ± 0.8

23.5 ± 27.1

3.2

22.2 ± 0.6

21.6 ± 23.1

FL/W

32.2 ± 1.5

28.8 ± 34.8

4.7

30.6 ± 1.1

29.1 ± 32.2

C (μg/m)

111.2 ± 8.6

88.2 ± 127.5

7.7

87.5 ± 3.8

82.3 ± 91.4

H (m)

13.0 ± 1.5

9.2 ± 15.1

11.5

11.1 ± 0.8

10.4 ± 12.6

DBH (cm)

14.4 ± 1.8

9.8 ± 18.5

12.5

12.3 ± 1.0

11.1 ± 13.6

SV (dm3)

91.0 ± 26.7

32.9 ± 152.7

29.3

57.2 ± 12.2

44.3 ± 75.5

Taiyuan

FL (mm)

0.78 ± 0.04

0.72 ± 0.87

5.1

0.65 ± 0.03

0.61 ± 0.68

FW (μm)

24.6 ± 0.9

22.6 ± 27.4

3.7

21.6 ± 0.4

21.0 ± 22.1

FL/W

31.7 ± 1.1

29.0 ± 34.2

3.5

29.9 ± 1.4

27.9 ± 31.4

C (μg/m)

103.5 ± 8.4

84.4 ± 120.0

8.1

80.0 ± 1.6

77.7 ± 81.8

H (m)

13.9 ± 1.7

9.5 ± 16.4

12.2

11.7 ± 0.5

11.0 ± 12.2

DBH (cm)

14.8 ± 1.9

11.3 ± 18.5

12.8

13.0 ± 0.8

11.7 ± 13.6

SV (dm3)

100.9 ± 31.1

46.1 ± 172.4

30.8

65.5 ± 9.2

50.7 ± 74.6