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Ceballos, H.Kawuki, Robert S.Gracen, V.E.Yencho, G.C.Hershey, Clair H.[Conventional breeding, marker-assisted selection, genomic selection and inbreeding in clonally propagated crops: a case study for cassava]Conventional breeding, marker-assisted selection, genomic selection and inbreeding in clonally propagated crops: a case study for cassava

Breeding cassava relies on a phenotypic recurrent selection that takes advantage of the vegetative propagation of this crop. Successive stages of selection (single row trial- SRT; preliminary yield trial – PYT; advanced yield trial – AYT; and uniform yield trials UYT), gradually reduce the number...


Barandica, Orlando JoaquiLenis, Jorge I.Calle, FernandoMorante, NelsonPérez, Juan C.Hershey, Clair H.Ceballos, H.[Cassava breeding II: phenotypic correlations through the different stages of selection]Cassava breeding II: phenotypic correlations through the different stages of selection

Ceballos, H.Morante, NCalle, FLenis, Jorge I.Jaramillo O, GPérez Velásquez, Juan Carlos[Mejoramiento genético de la yuca]Mejoramiento genético de la yuca

Ceballos, H.Morante, NelsonCalle, FernandoLenis, Jorge I.Jaramillo, GustavoPérez, Juan Carlos[Cassava genetic improvement]Cassava genetic improvement

The selection response of a complex maize population improved primarily for quantitative disease resistance to northern leaf blight (NLB) and secondarily for common rust resistance and agronomic phenotypes was investigated at the molecular genetic level. A tiered marker analysis with 151 simple s...


Wisser, RJMurray, SCKolkman, Judith M.Ceballos, H.Nelson, R.J.[Selection mapping of loci for quantitative disease resistance in a diverse maize population]Selection mapping of loci for quantitative disease resistance in a diverse maize population

Cassava roots are the most important commercial product from this crop. Roots have two major components: the starchy parenchyma and the peel with higher amount of fibre and cyanogenic glucosides. In this study, a sample of 64 clones grown in replicated trials in five locations were evaluated for ...


Pérez, J.C.Lenis, Jorge I.Calle, FMorante, NSánchez, T.Debouck, Daniel G.Ceballos, H.[Genetic variability of root peel thickness and its influence in extractacle starch from cassava (manihot esculenta Crantz) roots]Genetic variability of root peel thickness and its influence in extractacle starch from cassava (manihot esculenta Crantz) roots

Rapid-cycling recurrent selection has been implemented to produce cassava varieties that deliver provitamin A carotenoids to human populations that are affected by vitamin A deficiency. Rapid-cycling selection relies on quantification in just one plant per genotype. This study was conducted to a...


Ortiz, D.Sánchez, T.Morante, NCeballos, H.Pachón, HelenaDuque E., Myriam CristinaChavez, Alba L.Escobar Salamanca, Andrés F.[Sampling strategies for proper quantification of carotenoid content in cassava breeding]Sampling strategies for proper quantification of carotenoid content in cassava breeding
Calle, FPérez Velásquez, Juan CarlosCeballos, H.Ortega, E.Lenis, Jorge I.Morante, N[Genetic diversity of cassava (Manihot esculenta Crantz) landraces in Ghana using SSR markers]Genetic diversity of cassava (Manihot esculenta Crantz) landraces in Ghana using SSR markers

Breeding cassava relies on several selection stages (single row trial-SRT; preliminary; advanced; and uniform yield trials—UYT). This study uses data from 14 years of evaluations. From more than 20,000 genotypes initially evaluated only 114 reached the last stage. The objective was to assess how ...


Ceballos, H.Pérez, Juan C.Barandica, Orlando JoaquiLenis, Jorge I.Morante, NelsonCalle, FernandoPino, LizbethHershey, Clair H.[Cassava Breeding I: The value of breeding value]Cassava Breeding I: The value of breeding value

Late root bulking is a major factor leading to rejection and abandoning of improved cassava genotypes in sub-Saharan Africa. Early bulking (EB) varieties shorten the growth period from planting to harvesting, better fit into environments with short rainy season, and reduce exposure to biotic and ...


Olasanmi, BAkoroda, M.O.Okogbenin, EmmanuelEgesi, Chiedozie N.Kahya, SSOnyegbule, OEwa, F.Gutiérrez, J.Ceballos, H.Tohme, Joseph M.Fregene, Martin A.[Bulked segregant analysis identifies molecular markers associated with early bulking in cassava (Manihot esculenta Crantz)]Bulked segregant analysis identifies molecular markers associated with early bulking in cassava (Manihot esculenta Crantz)

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