Related Experiment Video
Updated: Jun 21, 2026

Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy
Published on: July 29, 2019
Microsatellite variation in maize landraces from Northwestern Argentina: genetic diversity, population structure and
Verónica V Lia1, Lidia Poggio, Viviana A Confalonieri
1Departamento de Ecología, Genética y Evolución. Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Intendente Güiraldes y Costanera Norte s/n, 4to. Piso, Pabellón II, C1428EHA, Ciudad Autónoma de Buenos Aires, Argentina. vlia@cnia.inta.gov.ar
Abstract:
The highland region or Northwestern Argentina (NWA) is one of the southernmost areas of native maize cultivation and constitutes an expansion of the peruvian Andes sphere of influence. To examine the genetic diversity and racial affiliations of the landraces cultivated in this area, 18 microsatellite markers were used to characterize 147 individuals from 6 maize races representative of traditional materials. For the whole data set, a total of 184 alleles were found, with an average of 10.2 alleles per locus. The average gene diversity was 0.571. The observed patterns of genetic differentiation suggest that historical association is probably the main factor in shaping population structure for the landraces studied here. In agreement with morphological and cytogenetic data, Bayesian analysis of NWA landraces revealed the occurrence of three main gene pools. Assessment of racial affiliations using a combined dataset including previous data on American landraces showed a clear relationship between one of these gene pools and typical Andean races, whereas the remaining two gene pools exhibited a closer association to Caribbean accessions and native germplasm from the United States, respectively. These results highlight the importance of integrating regional genetic studies if a deeper understanding of maize diversification and dispersal is to be achieved.
Related Concept Videos
Genetic Variation
Genes exist in different versions called alleles, which...
Dihybrid Crosses
Law of Independent Assortment
Mutation, Gene Flow, and Genetic Drift
Principles of Pharmacogenetics: Types of Genetic Variants
What is Population Genetics?

