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Table 1 The Effects of Virus Inoculum and Stage of Plant Growth at the Time of Inoculation on Growth and Yield of Cowpea Cultivar "OLO II"

From: Interactions of viruses in Cowpea: effects on growth and yield parameters

Inoculum

API

Plant Height(cm)

No. of Leaves

No. of Flowers

No. of Pods

Pod length(cm)

Seed no./pod

Seed Weight(g)

CABMV

10

20.8bc

12.0b

0.0*

0.0

0.0

0.0

0.0

 

30

66.6a

23.0ab

4.7a

1.3b

4.1b

2.0b

0.05b

CMeV

10

26.7bc

7.0c

0.0

0.0

0.0

0.0

0.0

 

30

66.5a

18.1b

0.7b

0.0

0.0

0.0

0.0

SBMV

10

19.1c

3.5c

0.0

0.0

0.0

0.0

0.0

 

30

50.6ab

15.8b

1.0b

0.0

0.0

0.0

0.0

CABMV+

10

22.4bc

2.9c

0.0

0.0

0.0

0.0

0.0

CMeV

30

32.8b

11.0b

0.7b

0.7b

2.1b

1.3b

0.04c

CABMV+

10

25.7bc

3.1c

0.0

0.0

0.0

0.0

0.0

SBMV

30

36.3b

14.9b

0.7b

0.0

0.0

0.0

0.0

CMeV+

10

13.5c

3.6c

0.0

0.0

0.0

0.0

0.0

SBMV

30

56.9ab

25.1ab

5.0a

2.0a

8.1a

3.7a

0.1b

CABMV+

10

12.7c

2.4c

0.0

0.0

0.0

0.0

0.0

CMeV+

30

22.1bc

10.2b

0.0

0.0

0.0

0.0

0.0

SBMV

10

65.5a

18.7b

3.7a

2.7a

9.4a

3.3a

0.14b

BUFFER

30

69.3a

40.4a

4.7a

3.0a

10.4a

4.3a

0.16a

  1. API-Age of plant at inoculation; CABMV-Cowpea aphid-borne mosaic virus, CMeV-Cowpea mottle virus, SBMV-Southern bean mosaic virus.
  2. Each value is the mean of 3 replicates. In each column means followed by the same letter are not significantly different (P < 0.05) according to Duncan's multiple range test.
  3. *All zero (0) values carry the letter c according to Duncan's multiple range test.