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Se evaluó la resistencia de los padres y las progenies de la familia de yuca K (M Nga 2 x CM 2177-2), a Phytophthora tropicalis. Además de los parentales se inocularon raíces frescas de 69 individuos de la familia K. Con la evaluación fenotípica y con base en las mapas moleculares de M Nga 2 (Mad...


Loke, John BernardÁlvarez, E.Vallejo Cabrera, Franco AlirioMarin, JFregene, Martin A.Rivera, SLlano Rodríguez, Germán AlbertoPineda López, Benjamín[Análisis de QTLS de la resistencia a pudrición de raíz causada por Phytophthora tropicalis en una población segregante de yuca (Manihot esculenta Crantz)]Análisis de QTLS de la resistencia a pudrición de raíz causada por Phytophthora tropicalis en una población segregante de yuca (Manihot esculenta Crantz)

La población S1 de la variedad tailandesa de yuca MTAi8 (AM320), la cual presenta patrones de segregación definidos para el contenido de carotenos totales (Beta-caroteno), se sometió a un análisis de agrupamiento segregante (BSA = Bulk Segregant Analysis) empleando 700 marcadores moleculares tipo...


Marin Colorado, JARamírez, H.Fregene, Martin A.[Mapeo genético y análisis de QTL para carotenos en una población S1 de yuca = Genetic mapping and QTL analysis for carotenes in a S1 population of cassava]Mapeo genético y análisis de QTL para carotenos en una población S1 de yuca = Genetic mapping and QTL analysis for carotenes in a S1 population of cassava

Cassava (Manihot esculenta) is a tropical crop that is grown in Africa, Latin America and Southeast Asia. Cassava was introduced from Latin America into West and East Africa at two independent events. In Uganda a serious threat to cassava's survival is the cassava mosaic disease (CMD). Uganda has...


Kizito, E.B.Bua, A.Fregene, Martin A.Egwang, TGGullberg, U[The effect of cassava mosaic disease on the genetic diversity of cassava in Uganda]The effect of cassava mosaic disease on the genetic diversity of cassava in Uganda

Breeding goals of yield increases, root quality improvement, and disease resistance in cassava are considerably slowed down by biological characteristics of the crop, which includes a long growth cycle, a heterozygous genetic background and a poor knowledge of the organization of crop diversity. ...


Fregene, Martin A.Okogbenin, EmmanuelMba, CAngel, F.Suarez, MCGutiérrez A., Janeth PatriciaChavarriaga Aguirre, PaulRoca, William M.Bonierbale, Merideth W.Tohme, Joseph M.[Genome mapping in cassava improvement: Challenges, achievements and opportunities]Genome mapping in cassava improvement: Challenges, achievements and opportunities

Several molecular marker systems have been developed for assessing genetic diversity in crop germplasm collections. A trade-off often exists between the number of loci that can feasibly be sampled by a marker system and the amount of information provided by each locus. We compared the usefulness ...


Hurtado Lopez, PXOlsen, KMBuitrago, C.Ospina, C.Marin, JADuque E., Myriam CristinaVicente, M.C. deWongtiem, PrapitWenzl, PeterKillian, AAdekele, M.Fregene, Martin A.[Comparison of simple sequence repeat (SSR) and diversity array technology (DArT) markers for assessing genetic diversity in cassava Manihot esculenta Crantz)]Comparison of simple sequence repeat (SSR) and diversity array technology (DArT) markers for assessing genetic diversity in cassava Manihot esculenta Crantz)
Mba, CFregene, Martin A.Tohme, Joseph M.[Simple sequence repeat markers as efficient and robust molecular tools in cassava varietal development]Simple sequence repeat markers as efficient and robust molecular tools in cassava varietal development
Fregene, Martin A.Suárez, MMkumbira, J.Kulembeka, H.P.Ndedya, EKulaya, AMitchel, SGullberg, URosling, H.Dixon, Alfred G.O.Kresovich, S[Genetic differentiation in cassava (Manihot esculenta) land races as assessed by simple sequence repeat (SSR) markers]Genetic differentiation in cassava (Manihot esculenta) land races as assessed by simple sequence repeat (SSR) markers
Mba, CFregene, Martin A.Tohme, Joseph M.[Towards a densely saturated molecular genetic map of cassava: applying the DarT in the development and genome location of polymorphic DNA fragments]Towards a densely saturated molecular genetic map of cassava: applying the DarT in the development and genome location of polymorphic DNA fragments
Fregene, Martin A.Moreno Cabrera, MIOspina, C.Marín, J.A.Hurtado, PSantos Meléndez, Luis GuillermoBarrera, E.Gutiérrez A., Janeth PatriciaOkogbenin, EmmanuelEgesi, Chiedozie N.Mba, CBuitrago, C.Ceballos, H.Tomkins, JTohme, Joseph M.[Cassava genomics research at CIAT]Cassava genomics research at CIAT

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