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Guimaraes, Elcio PerpétuoDebouck, Daniel G.Beebe, Stephen E.Pompilio Martínez, CésarHershey, Clair H.Ceballos, H.[Pre-breeding : an alternative to add value to the plant genetic resources]Pre-breeding : an alternative to add value to the plant genetic resources

The cassava core collection was selected to represent, with minimum repetitiveness, the potential genetic diversity of the crop. The core (630 accessions) was chosen from the base collection (over 5500 accessions) on the basis of diversity of origin (country and geographic), morphology, isozyme p...


Chavarriaga Aguirre, PaulMaya, M.M.Tohme, Joseph M.Duque E., Myriam CristinaIglesias, C.A.Bonierbale, Merideth W.Kresovich, SKochert, G[Using microsatellites, isozymes and AFLPs to evaluate genetic diversity and redundancy in the cassava core collection and to assess the usefulness of DNA-BASED markers to maintain germplasm collections]Using microsatellites, isozymes and AFLPs to evaluate genetic diversity and redundancy in the cassava core collection and to assess the usefulness of DNA-BASED markers to maintain germplasm collections

Amblystira machalana Drake (Chinche negro de encaje) es una plaga del follaje de la yuca, que se ha venido observando desde 1985 en diferentes partes de Colombia, Ecuador y Venezuela provocando daños en este cultivo. Varios trabajos se realizaron en el CIAT con el objeto de conocer su ciclo de vi...


Arias, B.Bellotti, Anthony C.[Ciclo biológico, comportamiento e importancia económica de Amblystira machalana (Heteroptera: Tingidae) en el cultivo de la yuca (Manihot esculenta Crantz) = Biology, behavior and economic importance of Ambystira machalana (Heteroptera: Tingidae) on the cassava (Manihot esculenta Crantz)]Ciclo biológico, comportamiento e importancia económica de Amblystira machalana (Heteroptera: Tingidae) en el cultivo de la yuca (Manihot esculenta Crantz) = Biology, behavior and economic importance of Ambystira machalana (Heteroptera: Tingidae) on the cassava (Manihot esculenta Crantz)

Hybridization of synthetic allotetraploids of S. pinnatisectum with S. etuberosum (4x-EP) with S. acaule (2n = 4x = 48) resulted in two individuals that were highly fertile, in contrast to all other progenies. The unique individuals are hexaploids, 2n = 72, while the other progenies are tetraploi...


Chavez, R.Brown, CRIwanaga, Masaru[Application of interspecific sesquiploidy to introgression of PLRV resistance from non-tuber-bearing Solanum tuberosum to cultivated potato germplasm]Application of interspecific sesquiploidy to introgression of PLRV resistance from non-tuber-bearing Solanum tuberosum to cultivated potato germplasm

Research aimed at developing various Stylosanthes species as forage crops in South America began with the collection of Brazilian germplasm in the 1960s. These efforts have intensified greatly in the past 25 years with the participation of a number of local, national and international institution...


Miles, John W.Lascano, Carlos E.[Status of Stylosanthes development in other countries. I. Stylosanthes development and utilisation in South America]Status of Stylosanthes development in other countries. I. Stylosanthes development and utilisation in South America

Ethiopia is cited as one of the centres of sorghum diversity. In order to assess the on-farm genetic resources management of sorghum various research methodologies were employed. These were focus group interviews with 360 farmers, key informant interviews with 60 farmers and development agents an...


Mekbib, FBjornstad, A.Sperling, L.Synnevag, G[Factors shaping on-farm genetic resources of sorghum [Sorghum bicolor (L.) Moench] in the centre of diversity, Ethiopia]Factors shaping on-farm genetic resources of sorghum [Sorghum bicolor (L.) Moench] in the centre of diversity, Ethiopia

Desmodium wart, caused by Synchytrium desmodii, severely reduced soil seed reserves, seedling survival, and recruitment of adult plants of Desmodium ovalifolium ‘CIAT 350’ to the pasture sward from 1985 to 1988 at Carimagua in the eastern plains of Colombia. Under nonflooded conditions, wart did ...


Lenne, J.M.Torres, C.García, C.[Effect of wart disease on survival and yield of the tropical pasture legume Desmodium ovalifolium]Effect of wart disease on survival and yield of the tropical pasture legume Desmodium ovalifolium
Singh, S.P.[Bridging-parents for incompatible crosses between Mesoamerican and Andean common beans]Bridging-parents for incompatible crosses between Mesoamerican and Andean common beans

Cultivated common bean germplasm is especially diverse due to the parallel domestication of two genepools in the Mesoamerican and Andean centers of diversity and introgression between these gene pools. Classification into morphological races has helped to provide a framework for utilization of th...


Blair, Matthew W.Díaz, Lucy MilenaBuendía Castellanos, Hector F.Duque E., Myriam Cristina[Genetic diversity, seed size associations and population structure of a core collection of common beans (Phaseolus vulgaris L.)]Genetic diversity, seed size associations and population structure of a core collection of common beans (Phaseolus vulgaris L.)

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