Table 5 Summary on M-QTL and E-QTL by environment interaction for yield and yield components in BC/M and BC/P trials.

From: Cumulative and different genetic effects contributed to yield heterosis using maternal and paternal backcross populations in Upland cotton

Trial

Trait

BC

MPH

RIL

M-QTLa

n§

V(A)%c

V(AE)%d

n

V(A)%

V(AE)%

n

V(A)%

V(AE)%

BC/M

SY

11

0.72

1.07

7

0.65

1.29

17

1.44

0.63

LY

14

0.62

1.06

7

0.46

1.40

12

1.64

0.64

BNP

9

0.53

1.16

6

0.41

1.49

16

0.90

0.81

BW

13

1.33

0.59

5

0.65

0.96

22

1.98

0.31

LP

13

1.55

0.71

10

0.88

0.99

25

2.47

0.14

Total

60

  

35

  

92

  

E-QTL b

n

V(AA)% e

V(AAE)% f

n

V(AA)%

V(AAE)%

n

V(AA)%

V(AAE)%

SY

13

1.06

1.45

13

0.91

1.78

59

2.31

0.65

LY

15

1.27

1.48

8

0.87

1.80

52

2.28

0.71

BNP

8

1.48

1.18

7

0.16

2.78

25

2.31

0.63

BW

3

2.93

1.21

0

-

-

77

2.75

0.13

LP

36

1.99

0.58

8

1.48

1.33

101

2.67

0.20

Total

75

  

36

  

314

  

BC/P

M-QTL

n

V(A)%

V(AE)%

n

V(A)%

V(AE)%

n

V(A)%

V(AE)%

SY

7

2.58

0.50

4

1.44

1.09

10

2.25

0.41

LY

7

2.89

0.32

3

1.43

1.18

8

2.40

0.34

BNP

3

1.86

0.49

5

1.37

1.64

9

1.25

1.15

BW

4

2.35

0.75

5

0.87

1.54

11

2.88

0.23

LP

13

2.86

0.24

5

0.76

1.83

19

2.75

0.22

Total

34

  

22

  

57

  

E-QTL

n

V(AA)%

V(AAE)%

n

V(AA)%

V(AAE)%

n

V(AA)%

V(AAE)%

SY

6

3.09

0.86

2

3.51

0.64

24

3.85

0.32

LY

6

2.96

0.72

5

3.35

0.46

24

3.72

0.33

BNP

14

2.39

1.39

6

1.72

1.77

10

2.13

1.78

BW

10

3.29

0.55

6

2.96

1.38

26

3.96

0.25

LP

21

2.97

0.21

2

0.65

2.80

31

3.23

0.14

Total

57

  

21

  

115

  
  1. a,bThe main effect QTL (M-QTL) and epistasis QTL (E-QTL) by software ICIMapping 4.1. §The number of QTL. c,d,e,fThe proportion of phenotypic variation explained on average by single QTL (A), single QTL × environment interaction (AE), epistatic QTLs (AA), and epistatic QTLs × environment interaction (AAE) at the current scanning position, respectively.