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dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.authorChaparro-Giraldo, Alejandro
dc.contributor.authorBlanco M., Jennifer Teresa
dc.contributor.authorLópez-Pazos, Silvio Alejandro
dc.identifier.issnISSN: 2357-3732
dc.description.abstractMaize (Zea mays) is an important crop worldwide and is essential for industry. Many transgenic cultivars of maize have been developed over the years from this species, producing cultivars resistant to herbicides and insects, among other things. However, little is known about the gene flow processes that affect maize fields in Colombia, which is near the center of diversity for cultivated maize. We analyzed the gene flow phenomenon of 60 randomly chosen plots of maize, including farmer field landraces or other conventional varieties such as non-transgenic hybrids in Valle de San Juan (Colombia) using Inmunostrip®, PCR and ELISA tests on leaves (seed gene flow) and seeds (pollen gene flow). More than 88% of the plots were positive with the Inmunostrip® and PCR tests (35S promoter, Nos terminator and cry1F gene), using the leaves, while the remaining seven plots (12%) were positive for transgenic sequences in the seeds. The results indicated a significant level of overall transgene existence, which is consistent with gene flow from transgenic events. All of the field types (conventional maize, buffer zones, refuge, and Colombian landraces) showed evidence of a transgene presence. There are many problems that could increase the gene flow potential in Valle de San Juan, such as little respect for regulations (Colombian Decree 4525 on transgenic crops and biosafety), distance between transgenic and non-transgenic maize or use of refuge and/or buffer zones, high seed reuse and exchange and low technical assistance. Every policy decision must be made in light of scientific standards of judgment.
dc.publisherUniversidad Nacional de Colombia
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Agronomía Colombiana
dc.relation.ispartofAgronomía Colombiana
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.subject.ddc57 Ciencias de la vida; Biología / Life sciences; biology
dc.subject.ddc58 Plantas / Plants
dc.titleEvidence of gene flow between transgenic and non-transgenic maize in Colombia
dc.typeArtículo de revista
dc.relation.referencesChaparro-Giraldo, Alejandro and Blanco M., Jennifer Teresa and López-Pazos, Silvio Alejandro (2015) Evidence of gene flow between transgenic and non-transgenic maize in Colombia. Agronomía Colombiana, 33 (3). pp. 297-304. ISSN 2357-3732
dc.subject.proposalgenetically modified crop
dc.subject.proposalgene flow
dc.subject.proposalZea mays
dc.subject.proposalconventional variety
dc.subject.proposalintroduced varieties
dc.subject.proposallegal frameworks

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Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit