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Secondary traits can improve precision with which drought or low soil nitrogen (low-N) tolerant maize (Zea mays L.) genotypes are identified, compared to measuring only grain yield under each stress. The objective of this study was to identify secondary traits for indirect selection for yield imp...


Badu-Apraku, B.Akinwale, R.O.Ajala, S.O.Menkir, A.Fakorede, M.A.B.Oyekunle, M.[Relationships among traits of tropical early maize cultivars in contrasting environments]Relationships among traits of tropical early maize cultivars in contrasting environments

Maize improvement at the International Institute of Tropical Agriculture (IITA), which began in the 1970s, built on the germplasm and experience of earlier years. The main breeding emphasis was to develop maize cultivars and hybrids with high yield potential and durable resistance to diseases and...


Kamara, A.Y.Menkir, A.Fakorede, M.A.B.Ajala, S.O.Badu-Apraku, B.Kureh, I.[Agronomic performance of maize cultivars representing three decades of breeding in the Guinea Savannas of West and Central Africa]Agronomic performance of maize cultivars representing three decades of breeding in the Guinea Savannas of West and Central Africa

Drought occurrence and striga hermonthica (Del.) Benth infestation are formidable maize (Zea mays L.) production constriants in the savanna zones of West and Central Africa (WCA). The West and Central Africa collaborative Maize Research Network (WECAMAN), in collaboration with the International I...


Badu-Apraku, B.Fakorede, M.A.B.Menkir, A.Kamara, A.Y.Akanvou, L.Chabi, Y.[Response of early maturing maize to multiplestresses in the Guinea savanna of West and Central Africa]Response of early maturing maize to multiplestresses in the Guinea savanna of West and Central Africa

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

Full-sib families derived from Pool 16 DT, a tropical maize ( Zea mays L.) population, were evaluated in the 1995/96 and 1997/98 dry seasons, using two sites each season in Côte d’Ivoire. In all sites, the crop was irrigated from planting to about 2 weeks before anthesis, irrigation was discontin...


Badu-Apraku, B.Fakorede, M.A.B.Menkir, A.Kamara, A.Dapaah, S.[Screening maize for drought tolerance in the Guinea savanna of West and Central Africa]Screening maize for drought tolerance in the Guinea savanna of West and Central Africa

North Carolina Design I (NCD I) progenies derived from Pool 16 DT, a white, dent, early maturing, drought-tolerant and streak resistant tropical maize (Zea mays L.) population, were evaluated in the 1995/96 and 1997/98 dry seasons, using two sites each season in Côte d'Ivoire. In all sites, the c...


Badu-Apraku, B.Fakorede, M.A.B.Menkir, A.Kamara, A.Adam, A.[Effects of droughtscreening methodology on genetic variances and covariances in Pool 16 DT maize population]Effects of droughtscreening methodology on genetic variances and covariances in Pool 16 DT maize population

Maize (Zea mays L.) landraces in the northern Guinea savanna and Sudan savanna in West and Central Africa appear to have some drought-adaptive traits. This study was initiated to assess the level of improvement in yield potential and other agronomic traits achieved under drought stress (DS) and i...


Meseka, S.K.Fakorede, M.A.B.Ajala, S.Badu-Apraku, B.Menkir, A.[Introgression of alleles from maize landraces to improve drought tolerance in an adapted germplasm]Introgression of alleles from maize landraces to improve drought tolerance in an adapted germplasm

The West and Central Africa Collaborative Maize Research Network (WECAMAN) was instituted with the ultimate goal to help improve maize (Zea mays L.) production in West and Central Africa (WCA). One objective of the Network is to enhance the research capacity and capability of the participating na...


Badu-Apraku, B.Fakorede, M.A.B.Ajala, S.[Enhancing human resources for maize research and development in West and Central Africa: a networking approach]Enhancing human resources for maize research and development in West and Central Africa: a networking approach

Badu-Apraku, B.Gedil, M.Fakorede, M.A.B.Akinwale, R.Fasanmade, Y.Annor, B.Talabi, A.O.Oyekunle, M.Akaogu, I.C.Aderounmu, M.[Gene action and heterotic groups of early white quality protein maize inbreds under multiple stress environments]Gene action and heterotic groups of early white quality protein maize inbreds under multiple stress environments

Extra-early maize (Zea mays L) tolerant to low-N and drought could stabilize yields in sub-Saharan Africa. Studies were conducted under drought and low-N conditions in Nigeria for three years to determine the potential of 90 extra-early inbreds for hybrid production and evaluate the performance o...


Badu-Apraku, B.Fakorede, M.A.B.Oyekunle MAkinwale, R.[Selection of extra-early maize inbreds under low N and drought at flowering and grain-filling for hybrid production]Selection of extra-early maize inbreds under low N and drought at flowering and grain-filling for hybrid production

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