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Low soil Nitrogen (low-N) is one of the most important abiotic stresses responsible for significant yield losses in maize (Zea mays. L.). The development and commercialization of low N tolerant genotypes can contribute to improved food security in developing countries. However, selection for low ...


Ribeiro, P.F.Badu-Apraku, B.Gracen, V.E.Danquah, E.Y.García Oliveira, A.L.Asante, M.D.Afriyie-Debrah, CharlesGedil, M.[Identification of QTLs for grain yield and other traits in tropical maize under high and low soil-nitrogen environments.]Identification of QTLs for grain yield and other traits in tropical maize under high and low soil-nitrogen environments.

During the past 45 years, the genetic improvement programs of IITA and its partners have made spectacular progress in developing high-yielding crop varieties that offered best-bet solutions to major production constraints, such as, cassava mosaic, maize streak, Striga, soybean rust, insect pests,...


Ajala, S.Badu-Apraku, B.Menkir, A.[Maize genetic improvement for enhanced productivity gains in West and Central Africa]Maize genetic improvement for enhanced productivity gains in West and Central Africa

Maize (Zea mays L.) is a major staple food and cash crop in sub-Saharan Africa (SSA). However, its production and productivity are severely constrained by drought. A total of 120 single-cross hybrids and an open-pollinated control variety were evaluated for 2 years at two locations under managed ...


Akaogu, I.C.Badu-Apraku, B.Adetimirin, V.O.[Combining ability and performance of extra-early maturing yellow maize inbreds in hybrid combinations under drought and rain-fed conditions]Combining ability and performance of extra-early maturing yellow maize inbreds in hybrid combinations under drought and rain-fed conditions

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.Fakorede, M.A.B.Talabi, A.O.Oyekunle, M.Aderounmu, M.Lum, A.F.Ribeiro, P.F.Adu, G.B.Toyinbo, J.O.[Genetic studies of extra-early provitamin-A maize inbred lines and their hybrids in multiple environments]Genetic studies of extra-early provitamin-A maize inbred lines and their hybrids in multiple environments

A base index involving Striga damage, number of emerged Striga plantsand ears per plant is used for selecting for maize (Zea mays L.) grainyield under Striga infestation. There are contradictory reports on the reliabilityof number of emerged Striga plants for selecting for Striga resistance.The o...


Badu-Apraku, B.Akinwale, R.Oyekunle, M.[Efficiency of secondary traits in selecting for improved grain yield in extraearly maize under Strigainfested and Strigafree environments]Efficiency of secondary traits in selecting for improved grain yield in extraearly maize under Strigainfested and Strigafree environments
Badu-Apraku, B.Fakorede, M.A.B.Akinwale, R.O.[Key challenges in maize breeding in sub-Saharan Africa]Key challenges in maize breeding in sub-Saharan Africa

Availability of multiple-stress tolerant maize is critical for improvement in maize production in West and Central Africa (WCA). A study was carried out to (i) assess a set of inbred lines for combining ability under stressed and optimal conditions, (ii) determine the performance of the testcross...


Annor, B.Badu-Apraku, B.Nyadanu, D.Akromah, R.Fakorede, M.A.B.[Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments]Testcross performance and combining ability of early maturing maize inbreds under multiple-stress environments

Striga, drought, and low soil fertility constrain maize (Zea mays L.) productivity in West and Central Africa. Two Striga-resistant extra-early populations, TZEE-W Pop STR C0 (white) and TZEE-Y Pop STR C0 (yellow) were evaluated in field trials in Nigeria, f...


Badu-Apraku, B.Fakorede, M.A.B.Lum, A.F.Akinwale, R.[Improvement of yield and other traits of extra early maize under stress and nonstress environments]Improvement of yield and other traits of extra early maize under stress and nonstress environments

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