Table 1 Descriptive statistical analysis was conducted on 11 leaves phenotypic traits of 134 female trees from 13 natural populations of Eucommia ulmoides in China

Leaf length (LL) (mm)

138.94

21.31

77.95

219.94

15.34

Petiole length (PL) (mm)

15.96

3.13

8.83

33.46

19.62

Length to width ratio of leaf (LTWR)

2.20

0.33

1.47

3.67

14.92

Leaf width (LW) (mm)

63.82

9.03

34.76

98.74

14.15

Leaf area (LA) (mm²)

5276.01

1410.18

1659.03

12599.59

26.73

Red component of leaf (RC)

71.77

8.36

52.00

127.00

11.64

Blue component of leaf (BC)

57.84

5.21

46.00

107.00

9.00

Green component of leaf (GC)

72.40

10.06

50.00

123.00

13.89

Chlorophyll reference value (CRV)

2.43

0.75

0.09

3.58

30.88

Leaf perimeter (LP) (mm)

386.09

57.40

206.94

605.10

14.87

Specific leaf dry weight (SLDW) (g/mm²)

1.00 × 10⁻⁴

0.21 × 10⁻⁴

0.38 × 10⁻⁴

1.74 × 10⁻⁴

20.94

Mean

17.45