Crop wild relatives (CWRs) of rice hold important traits that can contribute to enhancing the ability of cultivated rice (Oryza sativa and O. glaberrima) to produce higher yields, cope with the effects of climate change, and resist attacks of pests and diseases, among others. However, the genetic...
Thomas, E.
,
Tovar, E.
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Villafane, C.
,
Bocanegra, J.L.
,
Moreno, R.
,
[Distribution, genetic diversity and potential spatiotemporal scale of alien gene flow in crop wild relatives of rice (Oryza spp.) in Colombia]
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Distribution, genetic diversity and potential spatiotemporal scale of alien gene flow in crop wild relatives of rice (Oryza spp.) in Colombia
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.
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Oyekunle, M.
,
Akinwale, R.
,
Aderounmu, R.O.
,
[Combining ability and genetic diversity of extraearly white maize inbreds under stress and nonstress environments]
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Combining ability and genetic diversity of extraearly white maize inbreds under stress and nonstress environments
Based on twenty years of global research, this is the first comprehensive reference on crop genetic diversity as it is maintained on farmland around the world. Showcasing the findings of seven experts representing the fields of ecology, crop breeding, genetics, anthropology, economics, and policy...
Jarvis, Devra I.
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Hodgkin, T.
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Brown, A.H.D.
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Tuxill, J.
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López Noriega, Isabel
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Smale, M.
,
Sthapit, B.R.
,
[Crop genetic diversity in the field and on the farm: principles and applications in research practices]
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Crop genetic diversity in the field and on the farm: principles and applications in research practices
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.
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Roshetko, James
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Jamnadass, Ramni H.
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Muriuki, Jonathan
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Kalinganire, Antoine
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Lillesø, Jens-Peter B.
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Beedy, Tracy
,
Cornelius, Jonathan
,
[Tree Seed and Seedling Supply Systems: A Review of the Asia, Africa and Latin America Models]
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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...
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, Michael
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López Noriega, Isabel
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Ellis, Dave
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Roa, Carolina
,
Rouard, Mathieu
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Hamilton, Ruaraidh Sackville
,
[Using Genomic Sequence Information to Increase Conservation and Sustainable Use of Crop Diversity and Benefit-Sharing]
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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, Ranajit
,
Cotty, P.J.
,
[Aspergillus flavus resident in Kenya: high genetic diversity in an ancient population primarily shaped by clonal reproduction and mutation-driven evolution]
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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 ...
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]
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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.
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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]
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Genetic diversity of tropical maize inbred lines combining resistance to Striga hermonthica with drought tolerance using SNP markers