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Bellotti, Anthony C.Roca, William M.Tohme, Joseph M.Chavarriaga Aguirre, PaulEscobar Pérez, Roosevelt H.Herrera Fernández, C.J.[Biotecnología para el manejo de plagas en la producción de semilla limpia]Biotecnología para el manejo de plagas en la producción de semilla limpia

Fregene, Martin A.Tohme, Joseph M.Roca, William M.Chavarriaga Aguirre, PaulEscobar Pérez, Roosevelt H.Ceballos, H.[Biotecnología para la yuca]Biotecnología para la yuca

Background: Developing new population types based on interspecific introgressions has been suggested by several authors to facilitate the discovery of novel allelic sources for traits of agronomic importance. Chromosome segment substitution lines from interspecific crosses represent a powerful an...


Gutiérrez, A.G.Carabalí, Silvio J.Giraldo Pasmín, O.X.Martínez Racines, César PompilioCorrea Victoria, Fernando J.Prado Patiño, G.A.Tohme, Joseph M.Lorieux, M[Identification of a rice stripe necrosis virus resistance locus and yield component QTLs using Oryza sativa x O. glaberrima introgression lines]Identification of a rice stripe necrosis virus resistance locus and yield component QTLs using Oryza sativa x O. glaberrima introgression lines

A polymerase chain reaction approach using degenerate primers that targeted the conserved domains of cloned plant disease resistance genes (R genes) was used to isolate a set of 15 resistance gene analogs (RGAs) from common bean (Phaseolus vulgaris). Eight different classes of RGAs were obtained ...


López, C.E.Acosta, I.F.Jara, Carlos E.Pedraza García, FabioGaitán Solís, ElianaGallego Sánchez, Gerardo J.Beebe, Stephen E.Tohme, Joseph M.[Identifying resistance gene analogs associated with resistances to different pathogens in common beans]Identifying resistance gene analogs associated with resistances to different pathogens in common beans
Martínez Racines, César PompilioBorrero Correa, Jaime C.Duque E., Myriam CristinaCorrea Victoria, Fernando J.Silva, J.Tohme, Joseph M.[Utilization of new alleles from wild rice species to improve cultivated rice in Latin America]Utilization of new alleles from wild rice species to improve cultivated rice in Latin America

We evaluated cassava bacterial blight (CBB) infection in an pair-cross population of 150 individuals derived from an intra-specific cross between two non-inbred cassava (Manihot esculenta Crantz) lines. The replicated trials were carried out in the field under high disease pressure over two conse...


Jorge, VFregene, Martin A.Velez, C.M.Duque E., Myriam CristinaTohme, Joseph M.Verdier, Valérie[QTL analysis of field resistance to Xanthomonas axonopodis pv. manihotis in cassava]QTL analysis of field resistance to Xanthomonas axonopodis pv. manihotis in cassava
Tohme, Joseph M.Correa Victoria, Fernando J.Levy, M[Know your enemy : a novel strategy to develop durable resistance to rice blast fungus through understanding the genetic structure of the pathogen population]Know your enemy : a novel strategy to develop durable resistance to rice blast fungus through understanding the genetic structure of the pathogen population

Cassava mosaic begomoviruses (CMBs) cause cassava mosaic disease (CMD) across Africa and the Indian subcontinent. Like all members of the geminivirus family, CMBs have small, circular single-stranded DNA genomes. We report here the discovery of two novel DNA sequences, designated SEGS-1 and SEGS-...

Cassava mosaic begomoviruses (CMBs) cause cassava mosaic disease (CMD) across Africa and the Indian subcontinent. Like all members of the geminivirus family, CMBs have small, circular single-stranded DNA genomes. We report here the discovery of two novel DNA sequences, designated SEGS-1 and SEGS-...


Ndunguru, JosephLeón, Leandro deDoyle, Catherine D.Sseruwagi, PeterPlata, GermanLegg, J.P.Thompson, GrahamTohme, Joseph M.Aveling, TheresaAscencio Ibáñez, Jose T.Hanley Bowdoin, Linda[Two Novel DNAs that enhance symptoms and overcome CMD2 resistance to cassava mosaic disease]Two Novel DNAs that enhance symptoms and overcome CMD2 resistance to cassava mosaic disease

Cassava bacterial blight (CBB), caused by Xanthomonas axonopodis pv. manihotis (Xam), is a major disease of cassava (Manihot esculenta Crantz) in Africa and South America. Planting resistant varieties is the preferred method of disease control. Recent genetic mapping of an F1 cross (TMS 30572 × C...


Jorge, VFregene, Martin A.Duque E., Myriam CristinaBonierbale, Merideth W.Tohme, Joseph M.Verdier, Valérie[Genetic mapping of resistance to bacterial blight disease in cassava (Manihot esculenta Crantz)]Genetic mapping of resistance to bacterial blight disease in cassava (Manihot esculenta Crantz)

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

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