Grouping of accessions of Mexican races of maize revisited with SSR markers.
Theor Appl Genet
; 113(2): 177-85, 2006 Jul.
Article
em En
| MEDLINE
| ID: mdl-16791685
Mexican races of maize (Zea mays L.) represent a valuable genetic resource for breeding and genetic surveys. We applied simple sequence repeat (SSR) markers to characterize 25 accessions of races of maize from Mexico. Our objectives were to (1) study the molecular genetic diversity within and among these accessions and (2) examine their relationships as assumed previously on the basis of morphological data. A total of 497 individuals were fingerprinted with 25 SSR markers. We observed a high total number of alleles (7.84 alleles per locus) and total gene diversity (0.61), confirming the broad genetic base of the maize races from Mexico. In addition, the accessions were grouped into distinct racial complexes on the basis of a model-based clustering approach. The principal coordinate analyses of the four Modern Incipient hybrids corroborated the proposed parental races of Chalqueño, Cónico Norteño, Celaya, and Bolita on the basis of the morphological data. Consequently, for some of the accessions, hybridizations provide a clue that can further be used to explain the associations among the Mexican races of maize.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Marcadores Genéticos
/
Zea mays
País/Região como assunto:
Mexico
Idioma:
En
Revista:
Theor Appl Genet
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Alemanha
País de publicação:
Alemanha