title: Microsatellite-based genetic diversity among accessions of maize landraces from Sinaloa in México.
abstract: In the state of Sinaloa México, traditional farmers still cultivate maize accessions with a wide diversity of morphological characteristics, but the gene reservoir maintained in these populations has been poorly studied and it is being lost due to changes in land use and the adoption of hybrid commercial varieties. The aim of this study was to evaluate the genetic diversity of some of these maize populations to contribute to their preservation. Twenty eight accessions were used for the analysis. DNA was extracted from 396 individuals and probed with 20 microsatellites distributed across the maize genome. A total of 121 alleles were obtained (average of 6.1 alleles per locus) and a total genetic diversity of 0.72. The UPGMA-cluster analysis, model-based population structure and principal component analysis revealed three major groups, one formed mainly by accessions of races typical of the Northwestern lowlands (Chapalote, Dulcillo del Noroeste, Tabloncillo Perla, Blando de Sonora and Elotero de Sinaloa) and the other two with accessions mainly from Tabloncillo and Tuxpeño. The high number of alleles per locus and total genetic diversity found in this study demonstrate a broad genetic basis of the accessions of maize landraces from Sinaloa, representing a gene reservoir useful in breeding programs.
authors: Maestría en Ciencia y Tecnología de Alimentos, Facultad de Ciencias Químico-Biológicas, Universidad Autónoma de Sinaloa, Culiacán, Sin., MéxicoPrograma Regional del Noroeste para el Doctorado en Biotecnología, Facultad de Ciencias Químico-Biológicas, Universidad Autónoma de Sinaloa, Culiacán, Sin., México.
authors: Karen V
authors: KV
authors: Pineda-Hidalgo
authors: Karla P
authors: KP
authors: Méndez-Marroquín
authors: Elthon Vega
authors: EV
authors: Alvarez
authors: Jeanett
authors: J
authors: Chávez-Ontiveros
authors: Pedro
authors: P
authors: Sánchez-Peña
authors: Jose A
authors: JA
authors: Garzón-Tiznado
authors: Misael O
authors: MO
authors: Vega-García
authors: Jose A
authors: JA
authors: López-Valenzuela
mesh_terms: D000483:Alleles; D004777:Environment; D019143:Evolution, Molecular; D005787:Gene Frequency; D014644:Genetic Variation; D005828:Genetics, Population; D018745:Genome, Plant; D005838:Genotype; D006801:Humans; D008800:Mexico; D018895:Microsatellite Repeats; D010802:Phylogeny; D003313:Zea mays / Q000145:classification* / Q000235:genetics*