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Maize (Zea mays L.) has the greatest yield potential in savannas of West and Central Africa (WCA). However, production in this agroecology is constrained by low levels of N, drought, and parasitism by striga [Striga hermonthica (Del) Benth.]. Diallel crosses involving 17 extra-early white maize i...


Badu-Apraku, B.Oyekunle, M.Akinwale, R.Aderounmu, R.O.[Combining ability and genetic diversity of extraearly white maize inbreds under stress and nonstress environments]Combining ability and genetic diversity of extraearly white maize inbreds under stress and nonstress environments

The paper reviews tree seed and seedling supply systems in sub-Saharan Africa, Asia and Latin America. Across these regions, the review found that some of the germplasm supply systems do not efficiently meet farmers’ demands and environmental expectations in terms of productivity, species and gen...


Nyoka, Betserai I.Roshetko, JamesJamnadass, Ramni H.Muriuki, JonathanKalinganire, AntoineLillesø, Jens-Peter B.Beedy, TracyCornelius, Jonathan[Tree Seed and Seedling Supply Systems: A Review of the Asia, Africa and Latin America Models]Tree Seed and Seedling Supply Systems: A Review of the Asia, Africa and Latin America Models

A survey was conducted from April to May 2014 in 214 farmers’ fields located across six major cassava-producing provinces (Western, Northwestern, Northern, Luapula, Lusaka, and Eastern) of Zambia to determine the status of cassava mosaic disease (CMD) and the species diversity of associated cassa...


Mulenga, R.M.Legg, J.P.Ndunguru, J.Miano, D.W.Mutitu, E.W.Chikoti, Patrick ChizaAlabi, O.J.[Survey, molecular detection and characterization of geminiviruses associated with cassava mosaic disease in Zambia]Survey, molecular detection and characterization of geminiviruses associated with cassava mosaic disease in Zambia

This article describes how CGIAR centers and partners are using genomic sequence information to promote the conservation and sustainable use of crop genetic diversity, and to generate and share benefits derived from those uses. The article highlights combined institutional, and benefit-sharing-re...


Halewood, MichaelLópez Noriega, IsabelEllis, DaveRoa, CarolinaRouard, MathieuHamilton, Ruaraidh Sackville[Using Genomic Sequence Information to Increase Conservation and Sustainable Use of Crop Diversity and Benefit-Sharing]Using Genomic Sequence Information to Increase Conservation and Sustainable Use of Crop Diversity and Benefit-Sharing

Aspergillus flavus has long been considered to be an asexual species. Although a sexual stage was recently reported for this species from in vitro studies, the amount of recombination ongoing in natural populations and the genetic distance across which meiosis occurs is largely unknown. In the cu...


Islam, M.S.Callicott, K.A.Mutegi, C.Bandyopadhyay, RanajitCotty, P.J.[Aspergillus flavus resident in Kenya: high genetic diversity in an ancient population primarily shaped by clonal reproduction and mutation-driven evolution]Aspergillus flavus resident in Kenya: high genetic diversity in an ancient population primarily shaped by clonal reproduction and mutation-driven evolution

The amount of genotypic and phenotypic variability that exists in a species is important for selection and initiating breeding programs. Yam bean is grown locally in tropical countries of the Americas and Asia for their tasty storage roots, which usually have low dry matter content. The crop was ...


Agaba, R.Tukamuhabwa, PhinehasRubaihayo, P.R.Tumwegamire, SilverSsenyonjo, A.Mwanga, R.O.M.Ndirigwe, J.Gruneberg, W.J.[Genetic variability for yield and nutritional quality in yam bean (Pachyrhizus sp.)]Genetic variability for yield and nutritional quality in yam bean (Pachyrhizus sp.)

Molecular-based characterization of open-pollinated varieties (OPVs) in maize is useful to define their unique profiles. A total of 58 SSR markers selected from a panel of 70 were used for genotyping three samples of 30, 50 and 100 plant bulks for each of 32 OPVs. The SSR markers detected a total...


Arafayne, G.Menkir, A.Adetimirin, V.O.Gedil, M.[Optimizing sample size for molecular characterization of open-pollinated maize (Zea mays L.) varieties using simple sequence repeat markers]Optimizing sample size for molecular characterization of open-pollinated maize (Zea mays L.) varieties using simple sequence repeat markers

Striga hermonthica and drought are the major stresses limiting maize yields in sub-Saharan Africa. The search for diverse maize lines’ tolerance to drought and resistance to S. hermonthica (DTSTHR) is very crucial for yield improvement in areas affected by the two stresses. Understanding the gene...


Mengesha, W.Menkir, A.Unachukwu, N.N.Meseka, S.K.Farinola, A.Girma Tessema, G.Gedil, M.[Genetic diversity of tropical maize inbred lines combining resistance to Striga hermonthica with drought tolerance using SNP markers]Genetic diversity of tropical maize inbred lines combining resistance to Striga hermonthica with drought tolerance using SNP markers

The extent of genetic diversity and genetic structure of 23 lowland and 23 mid-altitude adapted maize inbred lines that share a common source of resistance to the maize streak virus were surveyed using 18 amplified fragment length polymorphism (AFLP) primer pairs. Close to 86% of the 820 AFLP fra...


Menkir, A.Gedil, M.Franco, J.[Analysis of genetic structure and diversity among lowland and midaltitude adapted maize inbred lines with AFLP markers]Analysis of genetic structure and diversity among lowland and midaltitude adapted maize inbred lines with AFLP markers

Molecular-marker-aided evaluation of germplasm plays an important role indefining the genetic diversity of plant genotypes for genetic and populationimprovement studies. A collection of African cassava landraces and elite culti-vars was analysed for genetic diversity using 20 amplified fragment l...


Raji, A.A.J.Fawole, I.Gedil, M.Dixon, Alfred G.O.[Genetic differentiation analysis of African cassava (Manihot esculenta) landraces and elite germplasm using amplified fragment length polymorphism and simple sequence repeat markers]Genetic differentiation analysis of African cassava (Manihot esculenta) landraces and elite germplasm using amplified fragment length polymorphism and simple sequence repeat markers

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