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Fregene, Martin A.Ceballos, H.Roca, William M.Okogbenin, EmmanuelAkano, A.Mba, CChavarriaga Aguirre, PaulTohme, Joseph M.Ospina Patiño, Bernardo[Cassava biotechnology research at CIAT/Colombia]Cassava biotechnology research at CIAT/Colombia

Different aspects of anther culture are reviewed as follows: its application in plant breeding, conditions that affect results (physiology and genotype of donor plants, albinism, pollen development, pretreatment of anthers, culture media), var. obtained by anther culture, and comparative advantag...


Roca, William M.Nunez, VMMornan, K[Cultivo de anteras y mejoramiento de plantas]Cultivo de anteras y mejoramiento de plantas

Several important aspects of the use of molecular markers in cassava germplasm characterization and in plant breeding programs are indicated. Basic concepts considered include protein and DNA electrophoresis. In the case of cassava, isoenzyme electrophoresis was applied to confirm duplicates dete...


Ramírez, H.Calderón, A.Roca, William M.[Tecnicas moleculares para evaluar y mejorar el germoplasma vegetal]Tecnicas moleculares para evaluar y mejorar el germoplasma vegetal

Several techniques used to eliminate viruses from cassava are described, namely heat therapy, apical tissue culture, and micropropagation. Virological tests to index cassava viruses are also indicated as follows: ELISA, dsRNA, mechanical inoculation of leaf sap in plants on Chenopodium quinoa, an...


Roca, William M.Nolt, Barry L.Mafla, G.Roa E, J.C.Reyes, R.[Eliminacion de virus y propagacion de clones en la yuca (Manihot esculenta Crantz)]Eliminacion de virus y propagacion de clones en la yuca (Manihot esculenta Crantz)

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...


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

Escobar Pérez, Roosevelt H.Hernández, C.M.Restrepo M., José M.Ospina, GATohme, Joseph M.Roca, William M.[Desarrollo participativo de un sistema de propagación in vitro, a bajo costo para yuca]Desarrollo participativo de un sistema de propagación in vitro, a bajo costo para yuca

Sánchez, I.Angel, F.Fajardo, DiegoCastillo, MFLobo Arias, MGrum, M.Tohme, Joseph M.Roca, William M.[Caracterización por medio de marcadores moleculares como base en el mejoramiento genético del género Passiflora L.]Caracterización por medio de marcadores moleculares como base en el mejoramiento genético del género Passiflora L.

Una continua y mayor ganancia genética por selección en frijol común (Phaseolus vulgaris L.) depende de nuestro conocimiento de la organización de la diversidad genética útil y la habilidad para explotarla para todos los caracteres de valor agronómico, no sólo dentro de la especie P. vulgaris sin...


Singh, Shree P.Roca, William M.Debouck, Daniel G.[Ampliación de la base genética de los cultivares de frijol: Hibridación interespecífica en Phaseolus especies]Ampliación de la base genética de los cultivares de frijol: Hibridación interespecífica en Phaseolus especies

The Cassava Biotechnology Network (CBN) was formed in response to the need for a forum to discuss cassava biotechnology issues and to foster cassava biotechnology research on priority subjects. In CBN, the experience and efforts of many different organizations and countries are pulled together to...


Thro, Ann MarieRoca, William M.Henry, Guy[The Cassava Biotechnology Network (CBN) and cassava biotechnology research]The Cassava Biotechnology Network (CBN) and cassava biotechnology research

Cassava is probably the most efficient producer of carbohydrate per unit land area under tropical conditions. The high productivity of cassava makes it an attractive source of renewable industrial raw material, provided ways are found to reduce production costs and solve constraints. Cassava has ...


Fregene, Martin A.Ceballos, H.Roca, William M.Okogbenin, EmmanuelAkano, A.Mba, ChikeluChavarriaga Aguirre, PaulTohme, Joseph M.Ospina Patiño, Bernardo[Cassava biotechnology research at CIAT/Colombia]Cassava biotechnology research at CIAT/Colombia

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