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Tofiño Rivera, Adriana PatriciaOcampo Nahar, César H.Toro Chica, Orlando[Evidencia fenotípica y bioquímica de introgresión mesoamericana en accesiones de habichuela (Phaseolus vulgaris) cultivadas en centros secundarios de domesticación = Evidencia fenotípica y bioquímica de introgresión mesoamericana en accesiones de habichuela (Phaseolus vulgaris) cultivadas en centros secundarios de domesticación = Phenotypical and biochemical evidence regarding Mesoamerican introgression into the germplasm of kidney-beans (Phaseolus vulgaris) cultivated in secondary domestication centres]Evidencia fenotípica y bioquímica de introgresión mesoamericana en accesiones de habichuela (Phaseolus vulgaris) cultivadas en centros secundarios de domesticación = Evidencia fenotípica y bioquímica de introgresión mesoamericana en accesiones de habichuela (Phaseolus vulgaris) cultivadas en centros secundarios de domesticación = Phenotypical and biochemical evidence regarding Mesoamerican introgression into the germplasm of kidney-beans (Phaseolus vulgaris) cultivated in secondary domestication centres
Salcedo Castano, JMLépiz Ildefonso, RogelioCastañeda-Álvarez, Nora P.Ocampo Nahar, César H.Debouck, Daniel G.[Additional observations about Phaseolus rotundatus (Fabaceae), an endemic bean species from Western Mexico]Additional observations about Phaseolus rotundatus (Fabaceae), an endemic bean species from Western Mexico

In large ex situ germplasm collections, such as that maintained at CIAT for cassava, it is common to observe duplicates. The presence of duplicate clones increases the cost of conservation without contributing to representation or the available genetic base for crop improvement. To identify group...


Ocampo Nahar, César H.Angel, F.Jiménez, A.Jaramillo O, GHershey, Clair H.Granados F, EIglesias, C.A.[DNA fingerprinting to confirm possible genetic duplicates in cassava germplasm]DNA fingerprinting to confirm possible genetic duplicates in cassava germplasm

Esterase isozymes were chosen for fingerprinting CIAT`s cassava germplasm colleciton, because of (1) their technical repeatability; (2) high polymorphism (i.e., many alleles per locus); and (3) high numner of bands detectable in cassava clones (i.e., at least a few loci are expressed). A total of...


Ocampo Nahar, César H.Hershey, Clair H.Iglesias, C.A.Iwanaga, Masaru[Esterase isozyme fingerprinting of the cassava germplasm collection held at CIAT]Esterase isozyme fingerprinting of the cassava germplasm collection held at CIAT

Genetic studies of two isozyme loci have been carried out in root tips of eight cassava F1 progenies using polyacrylamide gel electrophoresis. Two loci, esterase-1 (East-1), the most distant cationic region, and glutamate oxaloacetate transaminase-1 (Got-1), the most proximal anionic region, were...


Sarria, RAOcampo Nahar, César H.Ramírez, H.Hershey, Clair H.Roca, William M.[Genetics of esterase and glutamate oxaloacetate transaminase isozymes in cassava (Manihot esculenta Crantz)]Genetics of esterase and glutamate oxaloacetate transaminase isozymes in cassava (Manihot esculenta Crantz)
Cuervo Ibáñez, MaritzaSantos, Luis GuillermoHernández, Ángela MarcelaBalcázar, María del SocorroMafla, G.Aranzales Rondón, EricsonOcampo Nahar, César H.Ciprián, ArsenioToro Chica, OrlandoDebouck, Daniel G.[Los bancos internacionales de germoplasma]Los bancos internacionales de germoplasma

In a general study of banana passion fruit genetic resources, diversity was analyzed in the two main cultigens, P. tripartita var. mollissima and P. tarminiana, and their closest wild relative, P. mixta, scoring isozyme bands (IDH,PGM,ACP,PGD,DIA,andPRX) on288 plants from 31 accessions. Polymorph...


Segura, Sergio D.Coppens d'Eeckenbrugge, GeoOcampo Nahar, César H.Ollitrault, P[Isozyme variation in Passiflora subgenus Tacsonia : Geographic and interspecific differentiation among the three most common species]Isozyme variation in Passiflora subgenus Tacsonia : Geographic and interspecific differentiation among the three most common species
Ocampo Nahar, César H.Toro Chica, Orlando[Two novel globulin variants found in the wild teparies beans (Phaseolus acutifolius A. Gray)]Two novel globulin variants found in the wild teparies beans (Phaseolus acutifolius A. Gray)

Plant genetic resources for food and agriculture form the basis of global food security. They comprise a diversity of genetic materials contained in traditional varieties, modern cultivars, and wild relatives. CIAT’s Genetic Resources Program hosts the world’s largest genetic holdings...


Debouck, Daniel G.Aranzales Rondón, EricsonBalcázar, María del SocorroCiprián, ArsenioCuervo Ibáñez, MaritzaHernández, Ángela MarcelaMafla, G.Martínez, JosefinaOcampo Nahar, César H.Santos, Luís GuillermoToro Chica, Orlando[Genetic resources program = Programa de recursos genéticos]Genetic resources program = Programa de recursos genéticos
Guzmán Díaz, Félix AlbertoToro Chica, OrlandoOcampo Nahar, César H.Sánchez, InésCárdenas, H.Debouck, Daniel G.[Observations about risks of genetic erosion and drift during multiplication and regeneration of germplasm, using wild common bean as model]Observations about risks of genetic erosion and drift during multiplication and regeneration of germplasm, using wild common bean as model

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