Cassava production in the central, southern and eastern parts of Africa is under threat by cassava brown streak virus (CBSV). Yield losses of up to 100% occur in cases of severe infections of edible roots. Easy illegal movement of planting materials across African countries, and long-range moveme...
Ozimati, A.
,
Kawuki, R.
,
Esuma, W.
,
Kayondo, I.S.
,
Wolfe, M.
,
Lozano, R.
,
Rabbi, Ismail Y.
,
Kulakow, P.
,
Jannink, Jean-Luc
,
[Training population optimization for prediction of cassava brown streak disease resistance in west African clones]
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Training population optimization for prediction of cassava brown streak disease resistance in west African clones
Cassava (Manihot esculenta Crantz) is an important staple food in sub-Saharan Africa. Breeding experiments were conducted at the International Institute of Tropical Agriculture in cassava to select elite parents. Taking into account the heterogeneity in the field while evaluating these trials can...
Elias, A.A.
,
Rabbi, Ismail Y.
,
Kulakow, P.A.
,
Jannink, Jean-Luc
,
[Improving genomic prediction in cassava field experiments using spatial analysis]
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Improving genomic prediction in cassava field experiments using spatial analysis
Cassava (Manihot esculenta Crantz) is an important staple food crop in Africa and South America; however, ubiquitous deleterious mutations may severely decrease its fitness. To evaluate these deleterious mutations, we constructed a cassava haplotype map through deep sequencing 241 diverse accessi...
Ramu, P.
,
Esuma, W.
,
Kawuki, R.
,
Rabbi, Ismail Y.
,
Egesi, Chiedozie N.
,
Bredeson, J.V.
,
Bart, R.S.
,
Verma, J.
,
Buckler, E.S.
,
Lu, F
,
[Cassava haplotype map highlights fixation of deleterious mutations during clonal propagation]
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Cassava haplotype map highlights fixation of deleterious mutations during clonal propagation
Plants' competing for available resources is an unavoidable phenomenon in a field. We conducted studies in cassava (Manihot esculenta Crantz) in order to understand the pattern of this competition. Taking into account the competitive ability of genotypes while selecting parents for breeding advan...
Elias, A.A.
,
Rabbi, Ismail Y.
,
Kulakow, P.
,
Jannink, Jean-Luc
,
[Improving genomic prediction in cassava field experiments by accounting for interplot competition]
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Improving genomic prediction in cassava field experiments by accounting for interplot competition
Breeding in the CGIAR Research Program on Roots, Tubers and Bananas (RTB) targets highly diverse biotic and abiotic constraints, whilst meeting complex end-user quality preferences to improve livelihoods of beneficiaries in developing countries. Achieving breeding targets and increasing the rate ...
Friedmann, Michael
,
Asfaw, Asrat
,
Anglin, Noelle L.
,
Becerra López Lavelle, Luis Augusto
,
Bhattacharjee, Ranjana
,
Brown, Allan
,
Carey, Edward
,
Ferguson, Morag E.
,
Gemenet, Dorcus
,
Lindqvist-Kreuze, Hanele
,
Rabbi, Ismail Y.
,
Rouard, Mathieu
,
Swennen, Rony
,
Thiele, Graham
,
[Genomics-Assisted Breeding in the CGIAR Research Program on Roots, Tubers and Bananas (RTB)]
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Genomics-Assisted Breeding in the CGIAR Research Program on Roots, Tubers and Bananas (RTB)
Background: Genomic selection (GS) promises to accelerate genetic gain in plant breeding programs especially for crop species such as cassava that have long breeding cycles. Practically, to implement GS in cassava breeding, it is necessary to evaluate different GS models and to develop suitable m...
Okeke, U.G.
,
Akdemir, D.
,
Rabbi, Ismail Y.
,
Kulakow, P.A.
,
Jannink, Jean-Luc
,
[Accuracies of univariate and multivariate genomic prediction models in African cassava]
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Accuracies of univariate and multivariate genomic prediction models in African cassava
Cassava (Manihot esculenta Crantz) is a clonally propagated staple food crop in the tropics. Genomic selection (GS) has been implemented at three breeding institutions in Africa to reduce cycle times. Initial studies provided promising estimates of predictive abilities. Here, we expand on previou...
Wolfe, M.D.
,
Carpio, D.P. del
,
Alabi, O.
,
Ezenwaka, L.C.
,
Ikeogu, Ugochukwu N.
,
Kayondo, I.S.
,
Lozano, R.
,
Okeke, U.G.
,
Ozimati, A.A.
,
Williams, E.
,
Egesi, Chiedozie N.
,
Kawuki, Robert S.
,
Kulakow, P.A.
,
Rabbi, Ismail Y.
,
Jannink, Jean-Luc
,
[Prospects for Genomic Selection in Cassava Breeding]
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Prospects for Genomic Selection in Cassava Breeding
Agbona, A.
,
Kulakow, P.A.
,
Rabbi, Ismail Y.
,
Prasad, P.
,
Arnaud, Elizabeth
,
Valette, L.
,
Angelique, M.
,
Mueller, L.
,
Menda, N.
,
[Cassavabase (cassavabase.org): an integrated field breeding and genomics database enables accelerated genetic gain in cassava]
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Cassavabase (cassavabase.org): an integrated field breeding and genomics database enables accelerated genetic gain in cassava