Grouping of accessions of Mexican races of maize revisited with SSR markers

Reif, J C and Warburton, M L and Xia, X C and Hoisington, D A and Crossa, J and Taba, S and Muminovic, J and Bohn, M and Frisch, M and Melchinger, A E (2006) Grouping of accessions of Mexican races of maize revisited with SSR markers. TAG Theoretical and Applied Genetics, 113 (2). pp. 177-185. ISSN 1432-2242

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Abstract

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

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Others > Maize
Depositing User:	Ms K Syamalamba
Date Deposited:	07 Nov 2011 13:04
Last Modified:	09 Dec 2011 03:46
URI:	http://oar.icrisat.org/id/eprint/3665
Official URL:	http://dx.doi.org/10.1007/s00122-006-0283-5
Projects:	UNSPECIFIED
Funders:	German Federal Ministry for Economic Cooperation and Development (BMZ) Project No.98.7860.4-001-01
Acknowledgement:	The molecular marker analyses of this research were supported by funds from the German Federal Ministry for Economic Cooperation and Development (BMZ) Project No. 98.7860.4-001-01. The authors thank Leticia Diaz and Ana Lidia Gomez for their excellent technical assistance. The authors thank three anonymous reviewers for their valuable suggestions
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