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Journal Article 2000

Autor: Chavez, Alba L. Bedoya Flores, JM Sánchez, T. Iglesias, C.A. Ceballos, H. Roca, William M.

The cassava core collection (601 genotypes) was evaluated for root and leaf contents of micronutrient minerals, ascorbic acid, and carotene. Wide genetic variability was observed for all measurements, indicating that there is good potential for exploiting and improving the nutritive value of cass...

Enlace original: https://cgspace.cgiar.org/handle/10568/43016

Investigación en Agricultura
Enlace permanente
Chavez, Alba L. ,  Bedoya Flores, JM ,  Sánchez, T. ,  Iglesias, C.A. ,  Ceballos, H. ,  Roca, William M. ,  [Iron, carotene, and ascorbic acid in cassava roots and leaves] ,  Iron, carotene, and ascorbic acid in cassava roots and leaves
Journal Article 1996

Autor: Angel, F. Barney, Victoria E. Tohme, Joseph M. Roca, William M.

Cassava (Manihot esculenta Crantz) germplasm collections are conventionally maintained by continuous vegetative propagation in the field. Tissue culture techniques provide a more convenient way to conserve germplasm. The cassava in vitro gene bank held in trust at CIAT comprises nearly 6000 acces...

Enlace original: https://cgspace.cgiar.org/handle/10568/44129

Investigación en Agricultura
Enlace permanente
Angel, F. ,  Barney, Victoria E. ,  Tohme, Joseph M. ,  Roca, William M. ,  [Stability of cassava plants at the DNA level after retrieval from 10 years of in vitro storage] ,  Stability of cassava plants at the DNA level after retrieval from 10 years of in vitro storage
Journal Article 2016-08-12

Autor: Chavarriaga Aguirre, Paul Brand, Alejandro Medina, Adriana Prías, Mónica Escobar Pérez, Roosevelt H. Martínez, Juan Díaz, Paula López Carrascal, Camilo Ernesto Roca, William M. Tohme, Joseph M.

The importance of cassava as the fourth largest source of calories in the world requires that contributions of biotechnology to improving this crop, advances and current challenges, be periodically reviewed. Plant biotechnology offers a wide range of opportunities that can help cassava become a b...

Enlace original: https://cgspace.cgiar.org/handle/10568/76548

Investigación en Agricultura
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Chavarriaga Aguirre, Paul ,  Brand, Alejandro ,  Medina, Adriana ,  Prías, Mónica ,  Escobar Pérez, Roosevelt H. ,  Martínez, Juan ,  Díaz, Paula ,  López Carrascal, Camilo Ernesto ,  Roca, William M. ,  Tohme, Joseph M. ,  [The potential of using biotechnology to improve cassava: a review] ,  The potential of using biotechnology to improve cassava: a review
Journal Article 1992

Autor: Hoyos, R.A. Roca, William M. Hosfield, GL Mayer, Jorge Edgard
Enlace original: https://cgspace.cgiar.org/handle/10568/65759

Investigación en Agricultura
DNA
Enlace permanente
Hoyos, R.A. ,  Roca, William M. ,  Hosfield, GL ,  Mayer, Jorge Edgard ,  [Particle gun transient expression of sexual embryos of common bean] ,  Particle gun transient expression of sexual embryos of common bean
Journal Article 1997

Autor: Singh, Shree P. Debouck, Daniel G. Roca, William M.
Enlace original: https://cgspace.cgiar.org/handle/10568/65772

Investigación en Agricultura
Enlace permanente
Singh, Shree P. ,  Debouck, Daniel G. ,  Roca, William M. ,  [Successful interspecific hybridization between Phaseolus vulgaris L. and P. costaricensis Freytag & Debouck] ,  Successful interspecific hybridization between Phaseolus vulgaris L. and P. costaricensis Freytag & Debouck
Journal Article 1992

Autor: Rao, Idupulapati M. Roca, William M. Ayarza, Miguel Angel Tabares, E García, R.

Somaclonal variation offers the possibility to obtain changes in one or a few characters of an otherwise outstanding cultivar without altering the remaining, and often unique, part of the genotype. It has been shown to be heritable for some species. A check line of Stylosanthes guianensis (Aubl.)...

Enlace original: https://cgspace.cgiar.org/handle/10568/44114

Investigación en Agricultura
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Rao, Idupulapati M. ,  Roca, William M. ,  Ayarza, Miguel Angel ,  Tabares, E ,  García, R. ,  [Somaclonal variation in plant adaptation to acid soil in the tropical forage legume Stylosanthes guianensis] ,  Somaclonal variation in plant adaptation to acid soil in the tropical forage legume Stylosanthes guianensis
Journal Article 1987

Autor: Núñez Zarantes, Víctor Manuel Martínez Racines, César Pompilio Narváez Vásquez, Javier Roca, William M.
Enlace original: https://cgspace.cgiar.org/handle/10568/88613

Investigación en Agricultura
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Núñez Zarantes, Víctor Manuel ,  Martínez Racines, César Pompilio ,  Narváez Vásquez, Javier ,  Roca, William M. ,  [Obtención de líneas homocigotas de arroz [Oryza sativa L.] tolerantes a la toxicidad de aluminio utilizando el cultivo de anteras] ,  Obtención de líneas homocigotas de arroz [Oryza sativa L.] tolerantes a la toxicidad de aluminio utilizando el cultivo de anteras
Journal Article 1987

Autor: Chavez, R. Roca, William M. Williams, J.T.

The overall and specific objectives of a collaborative research project between the International Board for Plant Genetic Resources (IBPGR) and CIAT are given. The overall objective is to assess and demonstrate the technical and logistic aspects of establishing and operating a pilot in vitro acti...

Enlace original: https://cgspace.cgiar.org/handle/10568/88602

Investigación en Agricultura
Enlace permanente
Chavez, R. ,  Roca, William M. ,  Williams, J.T. ,  [IBPGR-CIAT Collaborative Project on a pilot in vitro active genebank] ,  IBPGR-CIAT Collaborative Project on a pilot in vitro active genebank
Journal Article 1989

Autor: Roca, William M. Chavez, R. Martin, M.L.. Arias, D.I. Mafla, G. Reyes, Raúl

For many crops with preferential vegetative propagation, or which are sterile, or have seed unresponsive to standard seed storage techniques, in vitro methods can provide a valuable adjunct to other germplasm conservation strategies. Two types of in vitro gene banks are proposed: (i) an in vitro ...

Enlace original: https://cgspace.cgiar.org/handle/10568/83252

Investigación en Agricultura
Enlace permanente
Roca, William M. ,  Chavez, R. ,  Martin, M.L.. ,  Arias, D.I. ,  Mafla, G. ,  Reyes, Raúl ,  [In vitro methods of germ-plasm conservation] ,  In vitro methods of germ-plasm conservation

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