Table 2 Nodulation (nodule number and nodule dry matter), shoot dry matter, photosynthesis (A), stomatal conductance (gs), transpiration (E), leaf total chlorophyll (Total Chl.) and relative effectiveness (RE) induced by indigenous rhizobial isolates of cowpea relative to inoculation with Bradyrhizobium strain CB756 or 5 mM KNO3 feeding.

From: Distribution and correlation between phylogeny and functional traits of cowpea (Vigna unguiculata L. Walp.)-nodulating microsymbionts from Ghana and South Africa

Treatment

Nodule No.

Nodule DM

Shoot DM

A

gs

E

Total Chl.

RE

plant−1

mg.plant−1

g. plant−1

µmol (CO2) ms−2s−1

mol (H2O) ms−2s−1

mol (H2O) ms−2s−1

(mg. g−1. Fresh wt.)

%

TUTVUGH2

59 ± 5.4c-f

65.1 ± 10.3 h

1.01 ± 0.09k

16.7 ± 1.01gh

0.31 ± 0.04b-f

7.1 ± 0.48def

1.30 ± 0.06gh

45 ± 3.8k

TUTVUGH4

47 ± 4.9e-h

80.1 ± 10.5gh

1.71 ± 0.27hij

19.7 ± 0.82b-e

0.43 ± 0.00a

9.1 ± 0.02a

1.34 ± 0.14gh

76 ± 12.1hij

TUTVUGH17

65 ± 8.2b-e

120.2 ± 8.1c-f

2.21 ± 0.49fgh

18.6 ± 1.04d-g

0.30 ± 0.02c-f

7.8 ± 0.17cde

1.56 ± 0.15fg

99 ± 21.7fgh

TUTVUGH18

74 ± 4.3bcd

154.4 ± 10.5abc

3.32 ± 0.05abc

20.8 ± 0.92abc

0.43 ± 0.00a

8.9 ± 0.00abc

2.21 ± 0.08abc

148 ± 2.4abc

TUTVUGH22

53 ± 7.0d-g

108.7 ± 19.1d-g

2.55 ± 0.11def

16.3 ± 0.00 h

0.19 ± 0.00 hi

5.7 ± 0.00h

1.89 ± 0.01cde

114 ± 5.1def

TUTVUGH24

62 ± 8.7cde

89.5 ± 16.0fgh

1.74 ± 0.31hij

19.9 ± 0.35bcd

0.39 ± 0.04ab

8.4 ± 0.38a-d

1.47 ± 0.14fg

78 ± 13.6hij

TUTVUGH25

66 ± 2.1b-e

92.2 ± 17.0e-h

2.35 ± 0.04efg

18.2 ± 0.01d-h

0.22 ± 0.03gh

6.3 ± 0.59gh

2.42 ± 0.16a

105 ± 1.9efg

TUTVUSA28

34 ± 2.5fgh

128.2 ± 2.3c-e

2.37 ± 0.05efg

21.5 ± 0.60ab

0.30 ± 0.02c-f

8.8 ± 0.30abc

1.46 ± 0.05fg

106 ± 2.2efg

TUTVUSA31

35 ± 6.3fgh

70.9 ± 7.4gh

1.17 ± 0.07jk

18.4 ± 0.79d-g

0.33 ± 0.04bcd

8.0 ± 0.81bcd

1.11 ± 0.06 h

52 ± 3.0jk

TUTVUSA33

83 ± 8.2bc

159.7 ± 9.0ab

3.10 ± 0.29bcd

20.1 ± 0.01bcd

0.26 ± 0.00e-h

8.6 ± 0.01a-d

2.06 ± 0.02bc

138 ± 13.0bcd

TUTVUSA36

75 ± 5.0bcd

105.3 ± 12.2d-h

2.81 ± 0.30c-f

19.0 ± 1.41c-f

0.33 ± 0.02b-e

9.0 ± 0.38ab

2.27 ± 0.04ab

125 ± 13.5c-f

TUTVUSA41

125 ± 12.1a

143.3 ± 3.4a-d

3.71 ± 0.04a

16.2 ± 0.01 h

0.25 ± 0.03fgh

5.9 ± 0.47gh

2.02 ± 0.01bcd

166 ± 1.7a

TUTVUSA43

23 ± 4.9 h

86.9 ± 25.2fgh

2.44 ± 0.01ef

12.4 ± 0.00i

0.15 ± 0.00i

4.3 ± 0.02i

1.68 ± 0.10ef

109 ± 0.5ef

TUTVUSA44

88 ± 0.8b

136.5 ± 3.8a-d

2.89 ± 0.11cde

19.6 ± 0.45b-e

0.32 ± 0.02b-e

6.4 ± 0.21gh

2.29 ± 0.08ab

129 ± 5.1cde

TUTVUSA45

33 ± 3.7gh

74.9 ± 4.9gh

1.81 ± 0.09ghi

18.2 ± 0.47d-h

0.35 ± 0.04bc

6.8 ± 0.47efg

2.01 ± 0.05bcd

81 ± 4.2ghi

TUTVUSA48

74 ± 16.3bcd

74.6 ± 11.9gh

1.49 ± 0.07ijk

17.7 ± 0.01e-h

0.34 ± 0.01bc

6.6 ± 0.15fgh

2.08 ± 0.09bc

66 ± 3.1ijk

TUTVUSA50

114 ± 14.0a

170.0 ± 3.6a

3.57 ± 0.20ab

17.1 ± 0.09fgh

0.26 ± 0.01d-g

6.9 ± 0.05efg

1.71 ± 0.10def

159 ± 9.0ab

Bradyrhizobium CB756

59 ± 11.7c-g

72.2 ± 8.1gh

2.78 ± 0.17c-f

22.3 ± 0.00a

0.35 ± 0.00bc

6.5 ± 0.00fgh

1.97 ± 0.19b-e

124 ± 7.8c-f

5 mM KNO3

NA

NA

2.24 ± 0.03fgh

7.0 ± 0.10j

0.07 ± 0.00j

2.5 ± 0.05j

0.58 ± 0.04i

NA

F statistics

11.2***

8.02***

16.2***

31.5***

16.2***

25.2***

22.0***

16.4***

cv (%)

24.6

22.5

16

6.9

15.5

9.7

11.4

16.3

  1. Values (means ± SE; n = 4) with dissimilar letters in a column are significantly different at p < 0.001 (***).
  2. NA = Not applicable; RE was calculated as (x/y) * 100 for only the inoculated treatments. Where: x = shoot DM of inoculated plants and y = shoot DM of 5 mM KNO3-fed plants.
Back to article page