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Cassava (Manihot esculenta Crantz) is an important security crop that faces severe yield loses due to cassava brown streak disease (CBSD). Motivated by the slow progress of conventional breeding, genetic improvement of cassava is undergoing rapid change due to the implementation of quantitative t...


Kayondo, S.I.Carpio, D.P. delLozano, R.Ozimati, A.A.Wolfe, M.Baguma, Yona K.Gracen, V.Offei, S.Ferguson, M.Kawuki, R.Jannink, Jean-Luc[Genome-wide association mapping and genomic prediction for CBSD resistance in Manihot esculenta]Genome-wide association mapping and genomic prediction for CBSD resistance in Manihot esculenta

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. delAlabi, 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]Prospects for Genomic Selection in Cassava Breeding

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

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