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The genetic diversity present in the germplasm bank of Theobroma cacao L. conserved in the experimental station “La Suiza” of the Colombian Corporation for Agricultural Research –Corpoica– in Santander Province was studied. To that end, 100 cacao genotypes were characterized using isozymes, RFLPs, RAPDs and SSRs, using 25 microsatellites previously published in GenBank. The percent of amplification obtained was 100% which permitted identifying 168 alleles. Levels of polymorphism ranged from 2 to 14 alleles per locus, with an average of 6.72. Nei- Li’s similarity values and genetic distances among the 100 genotypes were obtained using the Ntsys® software version 2.1, and a dendrogram was constructed using the Upgma algorithm. The values obtained were greater than 0.45, and the dendrogram identified two main genetic groups and several internal subgroups. These results are an important advance in the state of knowledge of the genetic diversity of Theobroma cacao accessions preserved on germplasm banks and are very useful for developing and implementing genetic improvement and conservation programs based on genetic information and phenotypic traits favoring better quality, higher crop production and profitability in Colombia.

Análisis de la diversidad genética de accesiones de Theobroma cacao L. del banco de conservación a cargo de Corpoica