TY - JOUR
T1 - Grouping of accessions of Mexican races of maize revisited with SSR markers
AU - Reif, J. C.
AU - Warburton, M. L.
AU - Xia, X. C.
AU - Hoisington, D. A.
AU - Crossa, J.
AU - Taba, S.
AU - Muminović, J.
AU - Bohn, M.
AU - Frisch, M.
AU - Melchinger, A. E.
PY - 2006/7
Y1 - 2006/7
N2 - 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.
AB - 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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U2 - 10.1007/s00122-006-0283-5
DO - 10.1007/s00122-006-0283-5
M3 - Article
C2 - 16791685
AN - SCOPUS:33745490768
SN - 0040-5752
VL - 113
SP - 177
EP - 185
JO - Theoretical and Applied Genetics
JF - Theoretical and Applied Genetics
IS - 2
ER -