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Singh, Shree P.Debouck, Daniel G.Roca, William M.[Interspecific hybridization between Phaseolus vulgaris L. and P. parvifolius Freytag]Interspecific hybridization between Phaseolus vulgaris L. and P. parvifolius Freytag

Eighty-nine samples of Phaseolus germplasm were collected during a three-week exploration in the eastern slopes of the Bolivian Andes. Of particular interest are: 12 samples of lima bean, 4 samples of wild P. vulgaris and 64 samples of common bean landraces. Some problems related to the origin of...


Debouck, Daniel G.[Recoleccion de germoplasma de Phaseolus en Bolivia, Abril 23 - Mayo 14, 1988]Recoleccion de germoplasma de Phaseolus en Bolivia, Abril 23 - Mayo 14, 1988

No wild Phaseolus bean germplasm is currently available from seed banks for Ecuador. Because of the decisive importance of the wild forms in evolutionary studies of the bean crops, and given the key geographical situation of that country in the northern Andes, a joint exploration was recently car...


Debouck, Daniel G.Castillo T., R.Tohme, Joseph M.[Observations on little-known Phaseolus germplasm of Ecuador]Observations on little-known Phaseolus germplasm of Ecuador

The genetic variable of seven Phaseolus taxa has been evaluated on the basis of molecular data and the results have used to clarify the phyletic relationships between several taxa of the P. coccineus L. complex. Chloroplast DNA (cpDNA) from 33 populations was digested with six restriction endonuc...


Schmit, VéroniqueJardin, Paul duBaudoin, Jean-PierreDebouck, Daniel G.[Use of chloroplast DNA polymorphisms for the phylogenetic study of seven Phaseolus taxa including P. vulgaris and P. coccineus]Use of chloroplast DNA polymorphisms for the phylogenetic study of seven Phaseolus taxa including P. vulgaris and P. coccineus

The origin of 5 Phaseolus species cultivated in America (P. vulgaris, P. lunatus, P. coccineus, P. acutifolius, and P. polyanthus) is discussed within the context of a broader theory of the origin of this genus, for which 3 centers of origin may be defined: Mesoamerica, the northern and southern ...


Debouck, Daniel G.[Primary diversification of Phaseolus in the Americas: Three centres?]Primary diversification of Phaseolus in the Americas: Three centres?

Different aspects on the history, screening, and domestication effect on the evolution of the bean species are discussed, based on the concept of species domestication. Data are examined on plant systematics and geography, etnological botany, biochemistry, arqueology, and genetics of the crop. Th...


Debouck, Daniel G.[Problematica reciente de la domesticacion del frijol]Problematica reciente de la domesticacion del frijol

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