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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...
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...
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...
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...
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...
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 ...
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...
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