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Report 1992

Autor: Roca, William M. Henry, Guy Angel, F. Sarria, R

CIAT activities in developing biotechnology applications to cassava in the last decade are described. The strategies to identify research topics and implement in house capabilities and an international cooperative effort in cassava biotechnology are emphasized. Successful integration of selected ...

Enlace original: https://cgspace.cgiar.org/handle/10568/71401

Investigación en Agricultura
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Roca, William M. ,  Henry, Guy ,  Angel, F. ,  Sarria, R ,  [Biotechnology research applied to cassava improvement at the International Center of Tropical Agriculture (CIAT)] ,  Biotechnology research applied to cassava improvement at the International Center of Tropical Agriculture (CIAT)
Journal Article 2008

Autor: González Amao, M.T. Panta, A. Roca, William M. Escobar Pérez, Roosevelt H. Engelmann, F.

Shoot-tips and somatic embryos are the explants of choice for the in vitro long-term storage of ex situ plant genetic resources in liquid nitrogen. Cryopreservation of organized structures has significantly progressed, especially for species of tropical origin, with the development of several vit...

Enlace original: https://cgspace.cgiar.org/handle/10568/43329

Investigación en Agricultura
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González Amao, M.T. ,  Panta, A. ,  Roca, William M. ,  Escobar Pérez, Roosevelt H. ,  Engelmann, F. ,  [Development and large scale application of cryopreservation techniques for shoot and somatic embryo cultures of tropical crops] ,  Development and large scale application of cryopreservation techniques for shoot and somatic embryo cultures of tropical crops
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 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
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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 1998

Autor: Thro, Ann Marie Roca, William M. Iglesias, C.A. Henry, Guy Ng, S.Y.C.

Cassava (Manihot esculenta Crantz) is a tough and productive survival crop of smallholder farmers in the tropics. It is often grown where other crops fail. Research can make important contribution to food security and economic development in cassava-growing areas. This can be enhanced through in-...

Enlace original: https://cgspace.cgiar.org/handle/10568/43305

Investigación en Agricultura
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Thro, Ann Marie ,  Roca, William M. ,  Iglesias, C.A. ,  Henry, Guy ,  Ng, S.Y.C. ,  [Contributions of in-vitro biology to cassava improvement] ,  Contributions of in-vitro biology to cassava improvement
Book Chapter 1991

Autor: Roca, William M. Arias, D.I. Chavez, R.

In vitro conservation strategies are reviewed, with special reference to in vitro active and basic gene banks; likewise, important aspects that should be considered for in vitro conservation, such as regeneration, viability, genetic stability, and information systematization, are discussed. The 2...

Enlace original: https://cgspace.cgiar.org/handle/10568/55096

Investigación en Agricultura
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Roca, William M. ,  Arias, D.I. ,  Chavez, R. ,  [Metodos de conservacion in vitro del germoplasma] ,  Metodos de conservacion in vitro del germoplasma

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