Table 2 Relative genetic gain, coefficient of determination (R²), intercept (a) and regression coefficients (b) of grain yield and other agronomic traits of testcrosses involving early-maturing yellow S₁ families derived from four cycles of selection and tester TZEI 23, evaluated under drought, Striga-infested and optimal environments in Nigeria, 2014 to 2017

0.22

0.0027

2332

5.1

16.9

0.82

2950

498^c

12.63

0.85

4132

522^c

0.83

0.9

51.5

0.43^c

0.47

0.57

53.5

0.25

0.44

0.62

50

0.22

1.58

0.85

53

0.84^c

0.85

0.64

53.9

0.46

0.71

0.52

50.7

0.36

24.36

0.74

1.56

0.38^b

6.59

0.24

0.91

0.06

11.53

0.27

0.85

0.098

4.88

0.66

124.5

6.07

8.05

0.71

114.3

9.2^b

6.45

0.77

121

7.81^b

5.97

0.7

72.2

4.31^b

8.86

0.74

54.6

4.84^b

7.52

0.74

63

4.74^b

−21.82

0.34

0.55

−0.12

−22.14

0.87

11.7

−2.59^c

20

0.53

0.15

0.03

0.70

0.024

4.7

0.033

−6.22

0.39

22.2

−1.38

8.84

0.18

4.75

0.42

0.44

0.034

3.87

0.017

−3.14

0.84

3.82

−0.12^b

−2.41

0.74

2.91

−0.07^b

−0.25

0.0099

4.75

−0.012

^a

^a

^a

^a

− 2.59

0.65

3.09

− 0.08

0.25

0.0037

4.47

0.011

−4.50

0.79

5.56

−0.25^b

−2.43

0.51

3.71

−0.10

−4.92

0.21

1.22

−0.06

−9.36

0.45

1.71

−0.16

−7.86

0.87

2.29

−0.19^c

−2.74

0.43

0.84

−0.023

0.30

0.09

0.99

0.003

0.21

0.007

0.97

0.002

3.87

0.15

3.88

0.15

^a

^a

^a

^a

^a

^a

^a

^a

^a

^a

^a

^a

− 3.64

0.85

4.4

− 0.16^c

^a

^a

^a

^a

^a

^a

^a

^a

− 3.02

0.88

4.63

−0.14^c

^a

^a

^a

^a

^a

^a

^a

^a

12.37

0.3

5.9

0.73

^a

^a

^a

^a

^a

^a

^a

^a

21.55

0.99

5.29

1.14

^a

^a

^a

^a