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Report 1988

Autor: Chávez, R. Roca, William M. Arias Garzón, D.I. Withers, Lyndsey A. Williams, T
Enlace original: https://cgspace.cgiar.org/handle/10568/71310

Investigación en Agricultura
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Chávez, R. ,  Roca, William M. ,  Arias Garzón, D.I. ,  Withers, Lyndsey A. ,  Williams, T ,  [Establishment and operation of a pilot in vitro active genebank of cassava] ,  Establishment and operation of a pilot in vitro active genebank of cassava
Report 1993

Autor: Thro, Ann Marie Roca, William M. Henry, Guy
Enlace original: https://cgspace.cgiar.org/handle/10568/71315

Investigación en Agricultura
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Thro, Ann Marie ,  Roca, William M. ,  Henry, Guy ,  [Cassava biotechnology: international collaboration current situation and perspectives] ,  Cassava biotechnology: international collaboration current situation and perspectives
Report 1981

Autor: Roca, William M. Narvaez, J Rodríguez, J. Reyes, R. Mafla, G. Beltran, J. Roa E, J.C. Ramírez, H. Rodríguez, A.M.

With graphs, illustrations, photos, and tables, the utilization of tissue culture techniques for the conservation and international exchange of cassava is briefly described. Likewise, the results of the phenotypic stability of cassava cv. M. Mex 20, M. Col 650, M. Col 2197, CM 305-38, and CM 323-...

Enlace original: https://cgspace.cgiar.org/handle/10568/71732

Investigación en Agricultura
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Roca, William M. ,  Narvaez, J ,  Rodríguez, J. ,  Reyes, R. ,  Mafla, G. ,  Beltran, J. ,  Roa E, J.C. ,  Ramírez, H. ,  Rodríguez, A.M. ,  [Utilization of tissue culture techniques for the conservation and international exchange of cassava (Manihot esculenta) germplasm] ,  Utilization of tissue culture techniques for the conservation and international exchange of cassava (Manihot esculenta) germplasm
Report 1984

Autor: Roca, William M. Rodríguez, J.A. Mafla, G. Roa E, J.C.

Guidelines are provided to acquaint the personnel of national programs and other collaborators with the procedures to recover, propagate, and transplant culture materials after their arrival. These include: (1) recovery of the cultures by direct potting of cassava plants after short trips; 1 wk. ...

Enlace original: https://cgspace.cgiar.org/handle/10568/71686

Investigación en Agricultura
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Roca, William M. ,  Rodríguez, J.A. ,  Mafla, G. ,  Roa E, J.C. ,  [Procedures for recovering cassava clones distributed in vitro] ,  Procedures for recovering cassava clones distributed in vitro
Report 1980

Autor: Roca, William M.

Plant tissue culture includes a wide range of techniques: protoplast, cell, anther, callus, meristem and organ culture, all having one common factor: the growth of vegetative material in an aseptic environment; i,e., the sterilized culture medium in test tubes. In spite of the fact that several o...

Enlace original: https://cgspace.cgiar.org/handle/10568/71800

Investigación en Agricultura
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Roca, William M. ,  [Cultivo de tejidos en yuca] ,  Cultivo de tejidos en yuca
Report 1981

Autor: Roca, William M.

Methods of vegetative reproduction are discussed using the results obtained with cassava and potato. Results of clone cleaning by heat therapy and in vitro meristem culture are given. Two methods for rapid cassava multiplication are proposed: by sprouts from cuttings and single leaf cuttings, whi...

Enlace original: https://cgspace.cgiar.org/handle/10568/71822

Investigación en Agricultura
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Roca, William M. ,  [Reproduccion vegetativa de materiales para la siembra libres de enfermedades] ,  Reproduccion vegetativa de materiales para la siembra libres de enfermedades
Report 1984

Autor: Roca, William M.
Enlace original: https://cgspace.cgiar.org/handle/10568/71974

Investigación en Agricultura
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Roca, William M. ,  [Biotecnología: oportunidades para la investigación agrícola en América Latina] ,  Biotecnología: oportunidades para la investigación agrícola en América Latina
Report 1980

Autor: Roca, William M.
Enlace original: https://cgspace.cgiar.org/handle/10568/71368

Investigación en Agricultura
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Roca, William M. ,  [El cultivo de meristemas: su potencial en conservación de recursos genéticos, en intercambio y propagación de germoplasma] ,  El cultivo de meristemas: su potencial en conservación de recursos genéticos, en intercambio y propagación de germoplasma
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
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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

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