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Maruca vitrata Fabricius (Lepidoptera: Crambidae) is a polyphagous insect pest that feeds on a variety of leguminous plantsin the tropics and subtropics. The contribution of host-associated genetic variation on population structure wasinvestigated using analysis of mitochondrial cytochrome oxidas...


Agunbiade, T.A.Coates, B.S.Datinon, B.Djouaka, R.F.Sun, W.Tamo, M.Pittendrigh, Barry R.[Genetic Differentiation among Maruca vitrata F. (Lepidoptera: Crambidae) Populations on Cultivated Cowpea and Wild Host Plants: Implications for Insect Resistance Management and Biological Control Strategies]Genetic Differentiation among Maruca vitrata F. (Lepidoptera: Crambidae) Populations on Cultivated Cowpea and Wild Host Plants: Implications for Insect Resistance Management and Biological Control Strategies

The brown pod-sucking bug, Clavigralla tomentosicollis Stäl (Hemiptera: Coreidae), causes significant damage to cultivated cowpea, Vigna unguiculata Walp, a staple crop in sub-Saharan Africa. C. tomentosicollis pierce and suck sap from cowpea pods, resulting in reduced grain yield and quality. Th...


Steele, L.D.Sun, W.Valero, M.C.Ojo, J.A.Seong, K.M.Coates, B.S.Margam, V.M.Tamò, M.Pittendrigh, Barry R.[The mitogenome of the brown pod-sucking bug Clavigralla tomentosicollis Stäl (Hemiptera: Coreidae)]The mitogenome of the brown pod-sucking bug Clavigralla tomentosicollis Stäl (Hemiptera: Coreidae)

Cowpea covers the largest area of any grain legume in Africa and is especially important in West Africa where Nigeria and Niger alone account for over 75% of the total cowpea production in the world. Despite successes of international and national cowpea improvement research in the development an...


Manda, J.Alene, A.Hirpa Tufa, A.Abdoulaye, TahirouKamara, A.Olufajo, O.Boukar, O.Manyong, Victor M.[Adoption and ex-post impacts of improved cowpea varieties on productivity and net returns in Nigeria]Adoption and ex-post impacts of improved cowpea varieties on productivity and net returns in Nigeria

Cowpea, Vigna unguiculata (L.) Walp., is an important grain legume grown in tropical and subtropical regions, primarily Africa. The parasitic weed Striga gesnerioides (Willd.) Vatke is one of the most important constraints to cowpea production. Host plant resistance is the only practical control ...


Boukar, O.Kong, L.Singh, B.B.Murdock, L.Ohm, H.W.[AFLP and AFLPderived SCAR markers associated with Striga gesnerioides resistance in cowpea]AFLP and AFLPderived SCAR markers associated with Striga gesnerioides resistance in cowpea

Flower bud thrips, Megalurothrips sjostedti is the most severe field pest of cowpea that causes massive flower abortion which eventually results to substantial yield reduction in Africa. There is paucity of information on the mode of gene actions controlling inheritance of resistance to flower bu...


Oladejo, A.S.Boukar, O.Fatokun, C.A.Obisesan, I.O.[Genetic analysis of thrips resistance in cowpea (Vigna unguiculata [L.] Walp.)]Genetic analysis of thrips resistance in cowpea (Vigna unguiculata [L.] Walp.)

The differential ability of genotypes of soybean (Glycine max) and cowpea (Vigna unguiculata) to thrive under low-phosphorus (P) conditions by utilising P from sources with low solubility was assessed in a greenhouse study with a low-P savanna soil collected from a research field in Fashola, sout...


Nwoke, O.C.Diels, J.Abaidoo, R.C.Sanginga, N.[Utilization of phosphorus from different sources by genotypes of promiscuous soybean and cowpea in a lowphosphorus savanna soil]Utilization of phosphorus from different sources by genotypes of promiscuous soybean and cowpea in a lowphosphorus savanna soil

The complimentary effects of a native rhizobia strain (SAMFIX 286), lime and single superphosphate (SSP) as components of ISFM were evaluated on the biomass, nodulation and N2 fixation of cowpea (Vigna unguiculata L.). Lime was applied at the rate of 250 kg (Ca(OH)2) ha−1, while SSP was applied a...


Bello, S.K.Yusuf, A.A.Masso, C.[Performance of cowpea as influenced by native strain of rhizobia, lime and phosphorus in Samaru, Nigeria]Performance of cowpea as influenced by native strain of rhizobia, lime and phosphorus in Samaru, Nigeria

Seed transmission of Xanthomonas campestris pv. vignicola was investigated to ascertain the importance of seed as a primary source of inoculum for bacterial blight disease in cowpea. The study was carried out using seeds of five cowpea varieties (TVx 12349, IT86D-721, IT82D-889, Ife Brown and TVx...


Okechukwu, R.U.Ekpo, E.J.A.Okechukwu, O.C.[Seed to plant transmission of Xanthomonas campestris pv. vignicola isolates in cowpea]Seed to plant transmission of Xanthomonas campestris pv. vignicola isolates in cowpea

Field and laboratory experiments were conducted in the Sudan savanna site of IITA's experimental Station, Minjibir, Kano State, to study the survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed, and debris. The experiment was conducted in a randomised complete block desi...


Okechukwu, R.U.Ekpo, E.[Survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed and cowpea debris]Survival of Xanthomonas campestris pv. vignicola in infested soil, cowpea seed and cowpea debris

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