Table 4 Mean and coefficient of variation for total seed protein (%), iron, zinc and copper contents (mg 100 g⁻¹) of M₄ high yielding mutants of cowpea.

22.28^b ± 0.17

1.31

8.32^d ± 0.08

0.92

1.85^e ± 0.02

1.90

2.84^d ± 0.02

1.07

23.10^a ± 0.02

0.17

8.97^b ± 0.09

1.70

2.30^bc ± 0.03

2.19

3.32^c ± 0.06

3.26

23.15^a ± 0.06

0.43

9.32^a ± 0.06

1.21

2.21^d ± 0.03

2.04

3.17^c ± 0.02

1.31

22.65^b ± 0.27

0.93

8.74^bc ± 0.06

1.26

2.16^d ± 0.01

0.93

3.36^ab ± 0.03

1.49

22.67^b ± 0.02

0.16

8.38^d ± 0.09

1.78

2.27^c ± 0.01

1.11

3.46^a ± 0.03

1.59

23.16^a ± 0.03

0.24

9.24^a ± 0.07

1.25

2.30^bc ± 0.01

0.90

3.10^c ± 0.04

2.33

22.46^b ± 0.06

0.47

8.48^d ± 0.12

2.45

2.37^a ± 0.02

1.52

3.17^c ± 0.03

1.38

22.46^b ± 0.06

0.50

8.52 ^cd ± 0.06

1.23

2.36^ab ± 0.02

1.27

3.19^c ± 0.03

1.72

21.27^b ± 0.13

1.06

8.17^d ± 0.04

0.83

1.75^d ± 0.01

0.87

2.74^d ± 0.02

0.97

22.43^a ± 0.33

2.55

8.53^bc ± 0.06

1.29

2.24^a ± 0.01

1.03

3.07^c ± 0.03

1.64

22.48^a ± 0.38

2.96

8.75^ab ± 0.08

1.49

2.18^ab ± 0.02

1.40

3.15^bc ± 0.03

0.97

22.85^a ± 0.16

1.21

8.48^c ± 0.09

1.91

2.11^c ± 0.03

2.07

3.20^b ± 0.03

1.57

23.00^a ± 0.31

2.36

8.78^a ± 0.07

1.45

2.17^b ± 0.02

1.38

3.33^a ± 0.06

2.92