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Journal Article 1997

Autor: Fregene, Martin A. Angel, F. Gómez, R. Rodríguez, F. Chavarriaga Aguirre, Paul Roca, William M. Tohme, Joseph M. Bonierbale, Merideth W.

A genetic linkage map of cassava has been constructed with 132 RFLPs, 30 RAPDs, 3 microsatellites, and 3 isoenzyme markers segregating from the heterozygous female parent of an intraspecific cross. The F1 cross was made between ‘TMS 30572’ and ‘CM?2177-2’, elite cassava cultivars from Nigeria and...

Enlace original: https://cgspace.cgiar.org/handle/10568/42530

Investigación en Agricultura
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Fregene, Martin A. ,  Angel, F. ,  Gómez, R. ,  Rodríguez, F. ,  Chavarriaga Aguirre, Paul ,  Roca, William M. ,  Tohme, Joseph M. ,  Bonierbale, Merideth W. ,  [A molecular genetic map of cassava (Manihot esculenta Crantz)] ,  A molecular genetic map of cassava (Manihot esculenta Crantz)
Journal Article 1996

Autor: Thro, Ann Marie Beachy, Roger N. Bonierbale, Merideth W. Fauquet, Claude M. Henry, Guy Henshaw, Graham G. Hughes, Monica A. Kawano, Kazuo Raemakers, C.J.J.M. Roca, William M. Sch"pke, C. Taylor, Nigel J. Visser, Richard G.F.
Enlace original: https://cgspace.cgiar.org/handle/10568/88842

Investigación en Agricultura
Enlace permanente
Thro, Ann Marie ,  Beachy, Roger N. ,  Bonierbale, Merideth W. ,  Fauquet, Claude M. ,  Henry, Guy ,  Henshaw, Graham G. ,  Hughes, Monica A. ,  Kawano, Kazuo ,  Raemakers, C.J.J.M. ,  Roca, William M. ,  Sch"pke, C. ,  Taylor, Nigel J. ,  Visser, Richard G.F. ,  [International research on biotechnology of cassava (tapioca, Manihot esculenta Crantz) and its relevance to Southeast Asian economies: a cassava biotechnology network review] ,  International research on biotechnology of cassava (tapioca, Manihot esculenta Crantz) and its relevance to Southeast Asian economies: a cassava biotechnology network review
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
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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
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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 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
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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
Journal Article 1997

Autor: Escobar Pérez, Roosevelt H. Mafla, G. Roca, William M.

Shoot tips of in vitro-grown plantlets of cassava (Manihot esculenta Crantz), representing a wide range of germplasm, were cryopreserved as follows: precultured for 3 days, cryoprotected and dehydrated for 1 h, then frozen in liquid nitrogen using a six-step protocol. After 3 h in liquid nitrogen...

Enlace original: https://cgspace.cgiar.org/handle/10568/83250

Investigación en Agricultura
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Escobar Pérez, Roosevelt H. ,  Mafla, G. ,  Roca, William M. ,  [A methodology for recovering cassava plants from shoot tips maintained in liquid nitrogen] ,  A methodology for recovering cassava plants from shoot tips maintained in liquid nitrogen
Journal Article 1990

Autor: Marin, M.L. Mafla, G. Roca, William M. Withers, Lyndsey A.

Cryopreservation in liquid nitrogen of isolated zygotic embryos and whole seeds of cassava have been studied. A simple method is proposed for utilization in germplasm conservation or other related uses. Very high percentage survival values (ca. 97 percent) of zygotic embryos and whole seeds were ...

Enlace original: https://cgspace.cgiar.org/handle/10568/83253

Investigación en Agricultura
Enlace permanente
Marin, M.L. ,  Mafla, G. ,  Roca, William M. ,  Withers, Lyndsey A. ,  [Cryopreservation of cassava zygotic embryos and whole seeds in liquid nitrogen] ,  Cryopreservation of cassava zygotic embryos and whole seeds in liquid nitrogen
Journal Article 1999

Autor: Fregene, Martin A. Ospina, Julio A. Roca, William M.
Enlace original: https://cgspace.cgiar.org/handle/10568/83258

Investigación en Agricultura
Enlace permanente
Fregene, Martin A. ,  Ospina, Julio A. ,  Roca, William M. ,  [Recovery of cassava (Manihot esculenta Crantz) plants from culture of immature zygotic embryos] ,  Recovery of cassava (Manihot esculenta Crantz) plants from culture of immature zygotic embryos

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