Breeding for resistance to Striga can be done effectively under high and uniform artificial field infestation. To identify Striga tolerantresistant maize genotypes, it is essential to artificially inoculate every hill of maize in the breeding nursery with Striga seeds. The present method of inocu...
Ibikunle, O.A.
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Menkir, A.
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Kamara, A.Y.
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Ajeigbe, Hakeem A.
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Smith, M.A.
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[Evaluation of artificial field infestation techniques with Striga Hermonthica for resistance screening in maize (Zea mays L.)]
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Evaluation of artificial field infestation techniques with Striga Hermonthica for resistance screening in maize (Zea mays L.)
phytoparasite, Striga hermonthica (Del.) Benth., infests millions of hectares of cultivated fields of cereal crops in sub-Saharan Africa. Yield losses are often 70 but can be as high as 100% and farmers often abandon infested fields and move to new areas. The objectives of this study were to inve...
Kim, S.K.
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Adetimirin, V.O.
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Akintunde, A.Y.
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[Nitrogen effects on Striga hermonthica infestation, grain yield and agronomic traits of tolerant and susceptible maize hybrids]
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Nitrogen effects on Striga hermonthica infestation, grain yield and agronomic traits of tolerant and susceptible maize hybrids
Vitamin A deficiency, drought, low soil nitrogen (low N) and Striga hermonthica parasitism of maize (Zea mays L.) cause malnutrition and food insecurity in sub-Saharan Africa. The objectives of this study were to determine combining abilities of extra-early provitamin A (PVA) lines, classify them...
Badu-Apraku, B.
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Fakorede, M.A.B.
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Talabi, A.O.
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Oyekunle, M.
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Aderounmu, M.
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Lum, A.F.
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Ribeiro, P.F.
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Adu, G.B.
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Toyinbo, J.O.
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[Genetic studies of extra-early provitamin-A maize inbred lines and their hybrids in multiple environments]
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Genetic studies of extra-early provitamin-A maize inbred lines and their hybrids in multiple environments
The choice of the selection method to be used in the genetic improvement of a crop depends upon the type of gene action controlling the characters under study. Design 1 crosses were made in an open-pollinated maize population, TZL Composite-1 C1. As a result, 320 full-sib families were generated ...
Akanvou, L.
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Doku, E.V.
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Kling, J.
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[Estimates of genetic variances and interrelationships of traits associated with Striga resistance in maize]
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Estimates of genetic variances and interrelationships of traits associated with Striga resistance in maize
Seed treatments with two acetolactate synthase (ALS)-inhibiting herbicides, the sulfony- lurea herbicide nicosulfuron and the imidazolinone herbicide imazaquin, controlled the parasitic weed Striga hermonthica in corn. The XA-17 gene in ALS-modified P3180IR corn strongly reduced corn injury from ...
Striga is a weed known to be devastating to crops in the tropics. Yield reductions in maize of up to 90% have been observed in West Africa. In September 1994, a seed lot of Striga hermonthica (harvested in 1993 in sorghum fields in Abuja, Nigeria) was observed to have a very low germination rate ...
Czerwenka-Wenkstetten, I.M.
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Berner, D.K.
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Schilder, A.
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Gretzmacher, R.
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[First report and pathogenicity of Myrothecium roridum, Curvularia eragrostidis and C.lunata on seeds of Striga hermonthica in Nigeria]
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First report and pathogenicity of Myrothecium roridum, Curvularia eragrostidis and C.lunata on seeds of Striga hermonthica in Nigeria
The parasitic weed, Striga gesnerioides (Willd.) Vatke, is a major constraint in cowpea [Vigna unguiculata (L.) Walp.] production semi-arid regions of sub-Sahara Africa. Several sources of resistance have been identified. Of these, B301 has shown complete resistance to Striga across several count...
The parasitic witchweed, Striga hermonthica (Del.) Benth, is the greatest biological constraint for cereal crop production by resource-poor farmers in sub-Saharan Africa. Maize, Zea mays L., is a widely grown cereal crop in this region (22 × 106 ha). Striga-resistant maize populations were produc...
Kim, S.K.
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Fajemisin, J.
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Thé, C.
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Adepoju, A.
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Kling, J.
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Badu-Apraku, B.
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Versteeg, M.
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Carsky, R.
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Lagoke, S.T.O.
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[Development of synthetic maize populations for resistance to Striga hermonthica]
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Development of synthetic maize populations for resistance to Striga hermonthica
Striga hermonthica (Del.) Benth parasitizes maize (Zea mays L.) in sub-Saharan Africa, causing yield losses of up to 100% under severe infestation. Hybrid maize breeding for polygenic resistance to Striga has been undertaken at the International Institute of Tropical Agriculture (IITA) since the ...
Menkir, A.
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Meseka, S.
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[Genetic improvement in resistance to Striga in tropical maize hybrids]
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Genetic improvement in resistance to Striga in tropical maize hybrids