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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. ...


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

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...


Roca, William M.[Cultivo de tejidos en yuca]Cultivo de tejidos en yuca

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...


Roca, William M.[Reproduccion vegetativa de materiales para la siembra libres de enfermedades]Reproduccion vegetativa de materiales para la siembra libres de enfermedades
Thro, Ann MarieBeachy, Roger N.Bonierbale, Merideth W.Fauquet, Claude M.Henry, GuyHenshaw, Graham G.Hughes, Monica A.Kawano, KazuoRaemakers, 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

Bellotti, Anthony C.Roca, William M.Tohme, Joseph M.Chavarriaga Aguirre, PaulEscobar Pérez, Roosevelt H.Herrera Fernández, C.J.[Biotecnología para el manejo de plagas en la producción de semilla limpia]Biotecnología para el manejo de plagas en la producción de semilla limpia

Fregene, Martin A.Tohme, Joseph M.Roca, William M.Chavarriaga Aguirre, PaulEscobar Pérez, Roosevelt H.Ceballos, H.[Biotecnología para la yuca]Biotecnología para la yuca

Chavarriaga Aguirre, PaulEscobar Pérez, Roosevelt H.López, DaniloBeltrán, Jesús A.Roca, William M.Tohme, Joseph M.[Biotechnology for cassava improvement:Genetic modification and clean-seed production]Biotechnology for cassava improvement:Genetic modification and clean-seed production

Velásquez, A.M.Fory Sánchez, L.F.Roca, William M.Tohme, Joseph M.Gallego Sánchez, Gerardo J.Guevara, Edward D.Ramírez, J.Espinosa, H.Nagles, CSigner, JCastaño, Silvia ElenaJarvis, AndyBocanegra, J.L.Castro, F.Moreno, R.Orjuela, MA[Manihot-EcoMap - Distribución ecogeográfica del género Manihot en Colombia - Implicaciones para la conservación y flujo de genes entre cultivo silvestres]Manihot-EcoMap - Distribución ecogeográfica del género Manihot en Colombia - Implicaciones para la conservación y flujo de genes entre cultivo silvestres
Roca, William M.Hershey, Clair H.Malamud, OS[Taller Latinoamericano sobre Intercambio de Germoplasma de Papa y Yuca (1, 1982, Cali, Colombia). Memorias]Taller Latinoamericano sobre Intercambio de Germoplasma de Papa y Yuca (1, 1982, Cali, Colombia). Memorias

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...


Chavez, Alba L.Bedoya Flores, JMSánchez, 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

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