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Cassava (Manihot esculenta Crantz) is one of the most important food security crops in the tropics and increasingly being adopted for agro-industrial processing. Genetic improvement of cassava can be enhanced through marker-assisted breeding. For this, appropriate genomic tools are required to di...


Rabbi, Ismail Y.Kulembeka, H.P.Masumba, E.Marri, P.Ferguson, M.[An ESTderived SNP and SSR genetic linkage map of cassava (Manihot esculenta Crantz)]An ESTderived SNP and SSR genetic linkage map of cassava (Manihot esculenta Crantz)
Agbona, A.Kulakow, P.A.Rabbi, Ismail Y.Prasad, P.Arnaud, ElizabethValette, L.Angelique, M.Mueller, L.Menda, N.[Cassavabase (cassavabase.org): an integrated field breeding and genomics database enables accelerated genetic gain in cassava]Cassavabase (cassavabase.org): an integrated field breeding and genomics database enables accelerated genetic gain in cassava

The HarvestPlus program for cassava (Manihot esculenta Crantz) fortifies cassava with beta-carotene by breeding for carotene-rich tubers (yellow cassava). However, a negative correlation between yellowness and dry matter (DM) content has been identified. Here, we investigated the genetic control ...


Okeke, U.G.Akdemir, D.Rabbi, Ismail Y.Kulakow, P.A.Jannink, Jean-Luc[Regional Heritability Mapping provides insights into Dry matter (DM) Content in African white and yellow cassava populations]Regional Heritability Mapping provides insights into Dry matter (DM) Content in African white and yellow cassava populations

Before implementation of genomic selection, evaluation of the potential accuracy of prediction can be obtained by cross-validation. In this procedure, a population with both phenotypes and genotypes is split into training and validation sets. The prediction model is fitted using the training set,...


Ly, D.Hamblin, M.Rabbi, Ismail Y.Gedil, M.Bakare, M.A.Gauch Jr. H.Okechukwu, R.U.Dixon, A.Kulakow, P.A.Jannink, Jean-Luc[Relatedness and genotype x environment interaction affect prediction accuracies in genomic selection: a study in cassava]Relatedness and genotype x environment interaction affect prediction accuracies in genomic selection: a study in cassava

In clonally propagated crops, non-additive genetic effects can be effectively exploited by the identification of superior genetic individuals as varieties. Cassava (Manihot esculenta Crantz) is a clonally propagated staple food crop that feeds hundreds of millions. We quantified the amount and na...


Wolfe, M.D.Kulakow, P.A.Rabbi, Ismail Y.Jannink, Jean-Luc[Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties]Marker-based estimates reveal significant non-additive effects in clonally propagated cassava (Manihot esculenta): implications for the prediction of total genetic value and the selection of varieties

In the last 45 years, IITA has played a pivotal role in the genetic improvement of cassava for resourcepoor farmers in sub-Saharan Africa (SSA). More than 400 varieties have been developed that are not only high yielding but also resistant to diseases and pests. Many of these improved varieties h...


Rabbi, Ismail Y.Gedil, M.Ferguson, M.Kulakow, P.A.[Cassava improvement in the era of "agrigenomics": the road to nextgeneration breeding.]Cassava improvement in the era of "agrigenomics": the road to nextgeneration breeding.

Modern biotechnologies have dramatically reshaped the crop improvement research during the past decade. Biotechniques have become indispensable for efficient and effective development of new knowledge, processes, and products. IITA's biotechnology, strategized as three major themes― genomics, tra...


Gedil, M.Rabbi, Ismail Y.[Leveraging agrigenomics" for crop improvement"]Leveraging agrigenomics" for crop improvement"

The advent of relatively low-cost, massively parallel, high-throughput genome sequencing and the resultant availability of high density markers are revolutionizing the ways in which molecular markers can be applied to plant breeding. With the availability of the draft cassava genome sequence, the...


Ferguson, Morag E.Rabbi, Ismail Y.Kim, D.J.Gedil, M.Becerra López Lavelle, Luis AugustoOkogbenin, Emmanuel[Molecular markers and their application to cassava breeding: past, present and future]Molecular markers and their application to cassava breeding: past, present and future

The Bill & Melinda Gates Foundation (BMGF) and the CGIAR Research Program on Roots, Tubers and Bananas (RTB) cofunded the Cassava Monitoring Survey (CMS) project with the objective of documenting the extent of adoption of improved cassava varieties with a rigorous sampling and DNA based identific...


Assfaw Wossen, TesfamichealGirma Tessema, G.Abdoulaye, TahirouRabbi, Ismail Y.Olanrewaju, A.S.Bentley, J.Alene, A.Feleke, S.Kulakow, P.A.Asumugha, G.N.Adebayo, M.A.Tokula, M.Manyong, Victor M.[The cassava monitoring survey in Nigeria: final report]The cassava monitoring survey in Nigeria: final report

Several alternative options have been used for varietal identification. However most of the traditional methods have inherent uncertainty levels and estimates often have wide confidence intervals. In an attempt to circumvent traditional survey-based measurement errors in varietal identification, ...


Girma Tessema, G.Rabbi, Ismail Y.Olanrewaju, A.S.Alaba, O.Kulakow, P.A.Alabi, T.Ayedun, B.Abdoulaye, TahirouAssfaw Wossen, TesfamichealAlene, A.Manyong, Victor M.[A manual for large-scale sample collection, preservation, tracking, DNA extraction, and variety identification analysis]A manual for large-scale sample collection, preservation, tracking, DNA extraction, and variety identification analysis

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