Assessment of the response of fifteen cowpea [Vigna unguiculata L. (Walp.)] genotypes to infestation by Callosobruchus maculatus Fab. (Coloeptera: Bruchidae)

Figures & data

Table 1. Parentage and desirable traits of cowpea genotypes used

Genotypes	Parentage/Genotype	Some desirable traits*
Adom	CR-06-07	Smooth coat
Bengala	IT83S-818	High grain yield, early maturing (50–60 days)
Padi-Tuya	SARC 3–122-2	High grain yield, erect vines, good for fodder
IT97K-499-35	Songotra (IITA Cross)	High grain yield, resistant to Striga
Apagbaala	Prima/Tvu4552/CBE	High fodder/grain yield
SARC-L02	SARI Cross	large grain size
Marfo-Tuya	Sumbrisogla /518-2	High fodder/grain yield
GH3684 Red	Landrace	High fodder/grain yield
GH3684 Black	Landrace	High fodder/grain yield
UC-01	Breeding line (IT97K-499-35 SARC L02)	Early maturing, high grain yield
UCC-White	Breeding line (Mutant)	Very early maturing
UC96-11	Breeding line (IT97K-499-35 X SARC LO2)	Resistant to Striga
UC96-241	Breeding line (IT97K-499-35 x SARC L02)	Resistant to Striga
UC96-445	Breeding line (IT97K-499-35 x Apagbaala)	Resistant to Striga
UC96-513	Breeding line (IT97K-499-35 x Apagbaala)	Resistant to Striga

*Source of traits: Asare et al. (2013)

Table 2. Seed weight analysis before and after 40-day bruchid infestation

Genotype	Seed weight (g) ± SE		Seed weight loss (%)
	Initial	Residual
Adom	5.09 ± 0.09 hi	1.92 ± 0.09 degfg	62.28 ± 1.14 e
Apagbaala	5.43 ± 0.13 g	1.56 ± 0.03 gh	71.23 ± 0.73 abc
Bengpla	5.03 ± 0.07 i	1.69 ± 0.04 fgh	66.35 ± 0.92 bcde
GH3684 Red	5.19 ± 0.15 ghi	1.78 ± 0.08 efgh	65.65 ± 0.72 cde
GH3684 Black	6.8 ± 0.13 de	2.27 ± 0.09 bcd	66.59 ± 0.73 bcde
IT97K-499-35	6.16 ± 0.07 f	1.85 ± 0.38 efg	69.82 ± 6.43 abcd
Marfo-Tuya	4.44 ± 0.06 j	1.460.07 h	66.98 ± 1.88 ab
UC96-11	6.74 ± 0.17 e	1.9 ± 0.03 defg	71.81 ± 0.27 ab
UC96-241	7.34 ± 0.09 c	2.02 ± 0.08 cdef	72.46 ± 1.1 a
UC96-445	7.01 ± 0.03 de	2.16 ± 0.04 bcde	69.22 ± 0.67 abcd
UC96-513	6.90 ± 0.12 de	2.04 ± 0.06 cdef	70.43 ± 0.46 abcd
Padi-Tuya	9.99 ± 0.04 a	3.30 ± 0.2 a	66.91 ± 2.09 abcde
SARC L02	7.92 ± 0.02 b	2.48 ± 0.11 b	68.76 ± 1.43 abcd
UC-01	7.10 ± 0.18 cd	2.38 ± 0.12 bc	66.58 ± 0.84 bcde
UCC-White	5.38 ± 0.04 gh	1.89 ± 0.05 efg	64.96 ± 0.79 de

Means with different letters in the same column are significantly different at p < 0.05 level

Table 3. Ranking of the 15 cowpea genotypes based Susceptibility Index (SI)

Genotype	Number of damaged seeds ± SE (N = 40)	Severity of Seed damage	Susceptibility index (SI)	Rank based on SI*
Marfo-Tuya	39.33 ± 0.3	4.25 ± 07 cd	18.99	1
UC96-11	40 ± 0	6.93 ± 03 a	19.02	2
Apagbaala	40 ± 0	5.7 ± 01 abc	19.44	3
IT97K-499-35	40 ± 0	4.57 ± 1.8 bcd	19.48	4
UC96-513	39.67 ± 0.3	7.01 ± 02 a	19.53	5
GH3684 Black	40 ± 0	5.98 ± 03 abc	19.87	6
GH3684 Red	40 ± 0	4.61 ± 04 bcd	20.43	7
UC96-445	40 ± 0	6.38 ± 04 ab	20.47	8
Bengpla	40 ± 0	4.73 ± 02 bcd	20.48	9
UC-01	39.67 ± 0.3	6.59 ± 04 ab	20.52	10
SARC L02	40 ± 0	5.52 ± 0.5 abc	20.69	11
UC96-241	39.67 ± 0.3	6.54 ± 07 ab	20.78	12
Padi-Tuya	40 ± 0	5.34 ± 1.7 abc	22.17	13
UCC-White	40 ± 0	5.37 ± 03 abc	22.23	14
Adom	40 ± 0	2.86 ± 04 d	22.96	15

Means with different letters in the same column are significantly different at p < 0.05 level;

*1-15 indicates the least to the most susceptible genotype among the 15 under study.

Table 4. Development parameters of C. maculatus reared on fifteen cowpea genotypes

Cowpea genotype	Mean ± SE		Adult emergence (%)	MDP
	Eggs laid	F₁ Progeny emerged
Adom	132 ± 17.5 c	114.33 ± 17.1 d	86.62 ± 6.77	20.64 ± 4.71 b
Apagbaala	317.7 ± 41.7 ab	228 ± 4.04 abc	73.83 ± .83	26.96 ± 1.51 a
Bengpla	299.7 ± 52.3 ab	189 ± 7.77 bcd	67.1 ± 11.8	26.19 ± 0.70 a
GH3684 Red	270.7 ± 55.4 ab	184.33 ± 15 bcd	71.28 ± 8.04	25.49 ± 0.49 a
GH3684 Black	299.3 ± 18.6 ab	239 ± 13.1 abc	80.33 ± 5.68	27.33 ± 0.42 a
IT97K-499-35	226.7 ± 80.9 bc	182.67 ± 70 bcd	76.19 ± .36	27.70 ± 0.93 a
Marfo-Tuya	236.3 ± 54.5 abc	166.67 ± 25.5 cd	73.99 ± 8.35	26.94 ± 0.99 a
UC96-11	333.3 ± 20.3 ab	277.33 ± 12.7 a	83.36 ± 1.35	27.42 ± 0.84 a
UC96-241	292 ± 31.1 ab	259.33 ± 27.1 ab	88.9 ± 1.55	26.36 ± 0.26 a
UC96-445	272.7 ± 18.7 ab	255.33 ± 14.8 ab	93.78 ± 1.03	26.79 ± 0.66 a
UC96-513	331 ± 15 ab	278 ± 6.08 a	84.46 ± 5.29	27.49 ± 1.02 a
Padi-Tuya	270.3 ± 85.9 ab	213.67 ± 68.5 abc	78.75 ± 1.54	25.37 ± 0.74 a
SARC L02	293 ± 21.9 ab	220.67 ± 19.3 abc	75.73 ± 6.77	26.86 ± 1.00 a
UC-01	355 ± 25.5 a	261.67 ± 17.7 ab	74.6 ± 8.3	27.01 ± 0.65 a
UCC-White	290.3 ± 19 ab	214.67 ± 13.1 abc	74.67 ± 6.89	25.31 ± 0.17 a

Means with different letters in the same column are significantly different at p < 0.05 level

Asare, A. T., Agbemafle, R., Adukpo, G. E., Diabor, E., & Adamtey, K. A. (2013). Assessment of functional properties and nutritional composition of some cowpea (Vigna unguiculata L.) genotypes in Ghana. ARPN Journal of Agricultural and Biological Science, 8(6), 465–469.

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