Estimation of gene flow on Phaseolus vulgaris L. using molecular markers : Microsatellites and polymorphisms at chloroplast DNA - González Torres, Rosa Inés; Gaitán Solís, Eliana; Duque E., Myriam Cristina; Toro Chica, Orlando; Debouck, Daniel G.; Tohme, Joseph M. (International Center for Tropical Agriculture, 2004)