Spatial distribution of genetic diversity in wild populations of Phaseolus vulgaris L. from Guanajuato and Michoacán, México

dc.creatorEMETERIO PAYRO DE LA CRUZ
dc.creatorPaul Gepts
dc.creatorSILVIA PATRICIA COLUNGA GARCIA MARIN
dc.creatorDANIEL ZIZUMBO VILLARREAL
dc.date2005
dc.date.accessioned2023-07-21T19:17:26Z
dc.date.available2023-07-21T19:17:26Z
dc.identifierhttp://cicy.repositorioinstitucional.mx/jspui/handle/1003/880
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7736467
dc.descriptionThe diversity, genetic structure, and genetic flow of wild populations of Phaseolus vulgaris L. within its Mesoamerican area of domestication, were analyzed by means of morphological and inter-simple sequence repeat molecular markers. Overall, 89% of the loci studied were polymorphic, 35% in the least diverse population and 65% in the most diverse. Genetic diversity in the populationswas high, between h = 0.14 and 0.29, as was the maximum distance between populations (D = 0.3). Between 40% and 45% of the diversity was explained by the differences among populations, indicating that a large number of populations is necessary to represent the wild gene pool in the germplasm collections. We found uniformity in allele frequencies among the populations, suggesting presence of outcrossing. We did not find correlation between genetic and geographic distances, but the dendrogram topology suggests geographical isolation due to the mountainous topography. Negative correlations were observed between the coefficient of variation of seed size and the distance between wild populations and fields . We obtained a highly negative correlation between percentage of polymorphic loci and distance to the nearest crop field, which also suggests gene flow from the domesticated populations. These observations suggest that genetic flow is taking place from domesticated toward wild populations and that the farmer, through his agricultural activities, could be influencing the magnitude and the characteristics of the gene flow, and along with this, the differentiation of wild populations. New approaches should be established for conservation in situ and maintaining bio-safety, given the risk of introducing genotypes from the Andes and transgenic varieties and causing genetic assimilation.
dc.formatapplication/pdf
dc.languageeng
dc.relationinfo:eu-repo/semantics/datasetDOI/DOI 10.1007/s10722-004-6125-x
dc.relationcitation:de la Cruz, E. P., Gepts, P., GarciaMarín, P. C., & Villareal, D. Z. (2005). Spatial Distribution of Genetic Diversity in Wild Populations of Phaseolus vulgarisL. from Guanajuato and Michoacán, México. Genetic Resources and Crop Evolution, 52(5), 589-599.
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.sourceGenetic Resources and Crop Evolution, 52(5), 589-599, 2005
dc.subjectinfo:eu-repo/classification/Autores/DIVERSITY
dc.subjectinfo:eu-repo/classification/Autores/GENETIC STRUCTURE
dc.subjectinfo:eu-repo/classification/Autores/GERMPLASM
dc.subjectinfo:eu-repo/classification/Autores/IN SITU CONSERVATION
dc.subjectinfo:eu-repo/classification/Autores/ISSR MOLECULAR MARKERS
dc.subjectinfo:eu-repo/classification/Autores/MESOAMERICA
dc.subjectinfo:eu-repo/classification/cti/2
dc.subjectinfo:eu-repo/classification/cti/2
dc.titleSpatial distribution of genetic diversity in wild populations of Phaseolus vulgaris L. from Guanajuato and Michoacán, México
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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