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Table 1 Descriptive statistics of the seven root-related traits within the mapping population at V1, V2 and V3 stages

From: Genome-wide association screening and verification of potential genes associated with root architectural traits in maize (Zea mays L.) at multiple seedling stages

Traits

Stage

P014

E1312

Sig.a

RILs

Mean

Mean

Mean

±SD

Range

Skewness

Kurtosis

CV (%)

H2(%)

RDW(g)

V1

0.04

0.01

*

0.03

0.03

0.17

1.85

3.60

90.05

70.91

V2

0.06

0.03

**

0.05

0.03

0.20

1.37

2.58

59.01

69.34

V3

0.07

0.04

**

0.10

0.05

0.32

1.06

1.32

52.54

85.73

RDW/SDW

V1

0.87

0.38

ns

0.78

1.10

9.91

4.28

22.43

141.33

65.94

V2

0.48

0.38

**

0.33

0.19

2.28

3.66

26.67

58.90

50.22

V3

0.25

0.19

*

0.41

0.17

1.49

1.25

3.56

41.91

83.27

TRL(cm)

V1

73.79

36.86

***

55.31

25.19

147.89

0.68

0.68

45.55

98.81

V2

155.29

100.07

***

123.57

57.78

418.32

1.46

4.41

46.76

99.24

V3

216.63

107.19

***

249.96

121.00

521.61

0.44

-0.69

48.41

99.96

SUA (cm2)

V1

28.19

16.42

***

19.32

9.75

66.03

1.17

2.93

50.48

99.31

V2

40.69

35.71

***

40.17

22.12

134.38

1.44

2.88

55.07

94.73

V3

76.30

43.73

**

91.16

51.44

235.91

0.68

-0.28

56.43

97.89

ARD (mm)

V1

1.13

1.00

**

0.94

0.20

1.46

1.22

4.07

21.46

97.74

V2

2.31

1.16

***

1.12

0.25

2.32

2.43

11.89

22.52

88.49

V3

3.49

2.45

***

1.38

0.45

4.57

4.22

28.76

32.69

95.46

ROV (cm3)

V1

1.15

0.63

***

0.56

0.36

2.60

2.31

8.84

65.52

98.15

V2

2.88

0.84

***

1.13

0.73

4.38

1.29

1.91

64.32

96.66

V3

3.08

1.79

***

2.82

2.26

22.94

3.63

25.17

80.25

97.35

RBN

V1

51.33

28.33

***

45.66

26.57

126.00

0.67

0.03

58.19

99.28

V2

94.33

52.67

***

105.88

93.84

1051.00

6.33

59.19

88.64

99.79

V3

331.00

145.33

***

264.94

362.10

4518.00

9.39

107.55

136.67

99.89

  1. RDW root dry weight, RDW/SDW root per shoot dry weight, TRL total root length, SUA surface area, ARD average root diameter, ROV root volume, RBN root branching number, SD Std. dev, CV coefficient of variation, H2 Broad-sense heritability
  2. alevel of significance via student-test with, ns no significant difference
  3. *significantly different at P < 0.05
  4. **significantly different at P < 0.01
  5. ***significantly different at P < 0.001