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Table 1 Phenotypic distribution of five grain-related traits in the XJ-RILs population derived from the cross of ‘Xiaomiqiao × Jinqiaomai 2’ in four environments

From: QTL mapping and candidate gene analysis for yield and grain weight/size in Tartary buckwheat

Trait

Environment

Parents

XJ-RILs population

Rice type

Non-Rice type

Skewness

Kurtosis

CV%

Xiaomiqiao

Jinqiaomai 2

Mean

Min

Max

Mean

Min

Max

TGW (g)

2017

16.78 ± 0.82

20.08 ± 0.56**

17.16 ± 2.18

12.88

22.92

21.24 ± 1.73**

16.57

27.30

-0.46

-0.25

14.0

2018

14.52 ± 1.41

20.65 ± 0.89**

14.90 ± 1.91

12.01

22.17

19.98 ± 1.79**

14.08

23.69

-0.32

-1.27

16.8

2019

12.34 ± 0.26

19.40 ± 0.44**

13.99 ± 1.94

11.17

20.41

17.56 ± 1.51**

12.53

21.12

-0.25

-0.92

14.8

2020

12.96 ± 0.35

20.71 ± 1.38**

15.99 ± 1.95

11.35

20.62

17.25 ± 1.93**

12.53

21.98

-0.03

-0.32

11.9

GL (mm)

2017

4.60 ± 0.14

5.37 ± 0.11**

4.39 ± 0.30

3.90

5.15

4.68 ± 0.37**

4.00

5.35

0.21

-1.15

8.1

2018

4.46 ± 0.30

5.24 ± 0.31**

4.52 ± 0.38

4.01

5.57

4.98 ± 0.40**

4.11

5.64

-0.01

-1.21

9.3

2019

3.81 ± 0.03

5.03 ± 0.53**

4.33 ± 0.36

3.77

5.42

4.71 ± 0.34**

3.85

5.27

-0.13

-0.90

8.5

2020

4.27 ± 0.09

6.39 ± 0.19**

5.86 ± 0.44

5.00

6.55

5.88 ± 0.39

5.05

6.60

-0.02

-0.84

6.3

GW (mm)

2017

2.99 ± 0.07

2.94 ± 0.10

2.95 ± 0.11

2.60

3.30

3.06 ± 0.13**

2.70

3.43

0.32

0.40

4.6

2018

2.89 ± 0.12

3.13 ± 0.16**

2.97 ± 0.12

2.75

3.35

3.17 ± 0.15**

2.80

3.54

0.37

-0.24

5.7

2019

2.57 ± 0.03

2.87 ± 0.03**

2.84 ± 0.13

2.56

3.17

3.02 ± 0.15**

2.69

3.44

0.11

-0.21

5.4

2020

2.87 ± 0.06

3.36 ± 0.06**

3.30 ± 0.20

2.92

3.70

3.37 ± 0.20

2.91

3.86

0.26

-0.70

5.6

L/W

2017

1.54 ± 0.06

1.83 ± 0.08**

1.49 ± 0.12

1.30

1.75

1.54 ± 0.16*

1.27

1.82

0.20

-1.34

10.0

2018

1.55 ± 0.05

1.70 ± 0.07**

1.54 ± 0.14

1.33

1.79

1.59 ± 0.18*

1.27

1.86

-0.02

-1.53

10.8

2019

1.50 ± 0.01

1.76 ± 0.02**

1.53 ± 0.14

1.34

1.79

1.58 ± 0.16*

1.29

1.83

-0.06

-1.58

10.1

2020

1.50 ± 0.02

1.93 ± 0.07**

1.80 ± 0.18

1.46

2.23

1.80 ± 0.19

1.39

2.16

0.05

-1.23

10.2

GY (kg/ha)

2017

1032.4 ± 161.5

1346.0 ± 246.9*

1458.0 ± 380.7

561.2

2243.9

1843.7 ± 378.3**

851.2

2785.4

-0.04

-0.19

25.2

2018

979.1 ± 281.1

1262.3 ± 197.1**

1240.3 ± 350.8

561.2

2141.9

1471.5 ± 366.9**

505.3

2502.1

0.06

0.19

27.0

2019

1349.5 ± 403.3

1897.1 ± 378.6**

1651.9 ± 352.5

754.9

2437.8

1934.9 ± 322.8**

714.8

2549.6

-0.38

-0.31

21.1

2020

31.4 ± 4.5

2506.2 ± 721.6**

734.9 ± 529.0

138.5

2318.5

1257.1 ± 676.3**

107.6

3656.9

0.62

-0.51

64.3

  1. TGW 1000-grains weight, GL Grain length, GW Grain width, L/W Grain length-to-width ratio, GY Grain yield, CV% Coefficient of variation
  2. ** and * indicate significant difference between the two parents, and between the 'Rice' type lines and the 'non-Rice' type lines at p < 0.01 and p < 0.05, respectively