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Improving maize productivity in the savannas of West Africa will depend on improving soil fertility and ensuring the efficient use of inputs and the relevant maize varieties tolerant to low nitrogen (N) that have been developed for this region. Several cycles of full-sib family selection that com...


Ajala, S.Kling, J.Menkir, A.[Full-Sib family selection in maize populations for tolerance to low soil nitrogen]Full-Sib family selection in maize populations for tolerance to low soil nitrogen

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

The majority of farmers in sub-Saharan Africa (SSA) depend on maize (Zea mays L.), which is mostly grown in drought-prone areas. Understanding the inheritance of drought tolerance would help in developing drought-tolerant maize hybrids that would help increase maize production under erratic rainf...


Meseka, S.K.Menkir AAjala, S.[Genetic analysis of performance of maize inbred lines under drought stress]Genetic analysis of performance of maize inbred lines under drought stress

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

Cassava mosaic disease (CMD), caused by different species of cassava mosaic geminiviruses (CMGs), is themost important disease of cassava in Africa and the Indian sub-continent. The cultivated cassava speciesis protected from CMD by polygenic resistance introgressed from the wild species Manihot ...


Oloyede-Kamiyo, Q.Ajala, S.Akoroda, M.O.[Estimates of genetic variances and relationship among traits associated with stem borer resistance in maize (Zea mays L.)]Estimates of genetic variances and relationship among traits associated with stem borer resistance in maize (Zea mays L.)

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
Kim, S.K.Ajala, S.[Combining ability of tropical maize germplasm in West Africa; I: open pollinated varieties]Combining ability of tropical maize germplasm in West Africa; I: open pollinated varieties

High cost of nitrogen fertilizer coupled with frequent occurrence of drought has forced many maize (Zea mays L.) growers in sub-Saharan Africa to either apply fertilizer below optimal dose or no fertilizer to their maize fields. The objectives of this study were to (i) compare the performance of ...


Meseka, S.K.Menkir, A.Elhassan, A.Ibrahim, S.S.Ajala, S.Kamara, A.[Responses of maize hybrids developed for drought tolerance to low soil nitrogen]Responses of maize hybrids developed for drought tolerance to low soil nitrogen

Nitrogen stress is a major nutrient constraint to maize productivity in the Northern Guinea savanna of West and Central Africa. Thus, improved maize germplasm tolerant to low N with the capacity to utilize N more efficiently together with improved agronomic practices appear to be the primary cont...


Omoigui, L.Alabi, S.Ado, S.Ajala, S.Kamara, A.[Genetic gains from cycles of fullsib recurrent selection for low nitrogen tolerance in a tropical maize population]Genetic gains from cycles of fullsib recurrent selection for low nitrogen tolerance in a tropical maize population

One hundred elite, open-pedigree tropical and subtropical inbreds of maize (Zea mays L.) that had been screened in 60 tropical trials were evaluated as inbreds and in testcrosses in Nigeria. The 24 superior inbreds among these were chosen to create two diallel sets for evaluation of grain yield a...


Kim, S.K.Ajala, S.Brewbaker, J.L.[Combining ability of tropical maize germplasm in West Africa. III. Tropical maize inbreds]Combining ability of tropical maize germplasm in West Africa. III. Tropical maize inbreds

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