Cassava mosaic disease (CMD) is the most-important disease of cassava (Manihot esculenta) in Africa, and is a potential threat to Latin American (LA) cassava production. Although this viral disease is still unknown in LA, its vector – the whitefly – has recently been found. The disease is best co...
Akano, A.O.
,
Dixon, Alfred G.O.
,
Mba, C
,
Barrera Sabogal, E
,
Fregene, Martin A.
,
[Genetic mapping of a dominant gene conferring resistance to cassava mosaic disease]
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Genetic mapping of a dominant gene conferring resistance to cassava mosaic disease
The gene pools for breeding cassava (Manihot esculenta Crantz) in Africa currently contain only a fraction of the existing genetic variation found in Latin America where the crop originates. Our research aimed to broaden the genetic base in Africa by introducing Latin American (LA) germplasm. The...
Okogbenin, Emmanuel
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Porto, M.C.M.
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Egesi, Chiedozie N.
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Mba, C
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Espinosa, E.
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Santos Melendez, LG
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Ospina, C.
,
Marin, JA
,
Barrera Sabogal, E
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Gutiérrez A., Janeth Patricia
,
Ekanayake, I.J.
,
Iglesias, C.A.
,
Fregene, Martin A.
,
[Marker-assisted introgression of resistance to cassava mosaic disease into Latin American germplasm for the genetic improvement of cassava in Africa]
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Marker-assisted introgression of resistance to cassava mosaic disease into Latin American germplasm for the genetic improvement of cassava in Africa
Fregene, Martin A.
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Morante, N
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Sánchez, T.
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Marin, JA
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Ospina, C.
,
Barrera Sabogal, E
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Gutiérrez A., Janeth Patricia
,
Guerrero, JM
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Bellotti, Anthony C.
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Santos Melendez, LG
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Alzate Gutiérrez, A.M.
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Moreno, S
,
Ceballos, H.
,
[Molecular markers for introgression of useful traits from wild manihot relatives of cassava, marker-assisted selection (MAS) of disease and root quality traits]
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Molecular markers for introgression of useful traits from wild manihot relatives of cassava, marker-assisted selection (MAS) of disease and root quality traits
A study was conducted to determine the extent of genetic diversity among African cassava (Manihot esculenta Crantz) accessions resistant to the cassava mosaic virus disease (CMD), using simple sequence repeat (SSR) markers. The accessions included a breeding stock (clone 58308), five improved lin...
Lokko, Y
,
Dixon, Alfred G.O.
,
Offei, S
,
Danquah, E.Y.
,
Fregene, Martin A.
,
[Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers]
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Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers
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 Bernard
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Álvarez, E.
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Vallejo Cabrera, Franco Alirio
,
Marin, J
,
Fregene, Martin A.
,
Rivera, S
,
Llano Rodríguez, Germán Alberto
,
Pineda 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)]
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Análisis de QTLS de la resistencia a pudrición de raíz causada por Phytophthora tropicalis en una población segregante de yuca (Manihot esculenta Crantz)
Los genes de resistencia se buscaron mediante dos estrategias. La primera, por medio de hibridización con sondas de maíz y arroz, utilizando RFLP. La segunda consistió en la amplificación de regiones conservadas de ADN, con cebadores degenerados NBS y Pto kinasa, en tres genotipos de yuca resiste...
Llano Rodríguez, Germán Alberto
,
Álvarez, E.
,
Muñoz, J.E.
,
Fregene, Martin A.
,
[Identificación de genes análogos de resistencia a enfermedades en yuca, Manihot esculenta Crantz, y su relación con la resistencia a tres especies de Phytophthora]
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Identificación de genes análogos de resistencia a enfermedades en yuca, Manihot esculenta Crantz, y su relación con la resistencia a tres especies de Phytophthora