Theoretical and Applied Genetics

, Volume 101, Issue 7, pp 1029–1038

Edaphic microsatellite DNA divergence in wild emmer wheat, Triticum dicoccoides, at a microsite: Tabigha, Israel

  • Y. C. Li
  • T. Fahima
  • J. H. Peng
  • M.S. Röder
  • V. M. Kirzhner
  • A. Beiles
  • A. B. Korol
  • E. Nevo
Original Paper

DOI: 10.1007/s001220051577

Cite this article as:
Li, Y., Fahima, T., Peng, J. et al. Theor Appl Genet (2000) 101: 1029. doi:10.1007/s001220051577
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Abstract 

Twenty eight microsatellite markers were used to analyze genetic divergence in tandem dinucleotide repeated DNA regions between two edaphic subpopulations of Triticum dicoccoides growing on the contrasting terra rossa and basalt soilsfrom a microsite at Tabigha, north of the Sea of Galilee, Israel. The terra rossa soil niche was drier and more stressful than the basalt throughout the growing season (November to May). Significant microsatellite divergence in allele distribution, repeat length, genetic diversity, and linkage disequilibria were found between emmer wheat from the two soil types over two short transects of 100 m each. Soil-specific and -unique alleles and linkage disequilibria were observed in the terra rossa and basalt subpopulations. A permutation test showed that the effects of random genetic drift were very low for the significant genetic diversity at microsatellite loci between the two subpopulations, suggesting that an adaptive molecular pattern derived by edaphic selection may act upon variation of the microsatellites.

Key words Genetic diversityEdaphic selectionMicrosatelliteMicrosite divergenceWild emmer wheatTriticum dicoccoides

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Y. C. Li
    • 1
  • T. Fahima
    • 1
  • J. H. Peng
    • 1
  • M.S. Röder
    • 2
  • V. M. Kirzhner
    • 1
  • A. Beiles
    • 1
  • A. B. Korol
    • 1
  • E. Nevo
    • 1
  1. 1.Institute of Evolution, University of Haifa, Haifa 31905 e-mail: nevo@research.haifa.ac.il, Fax: +972-48246554XX
  2. 2.Institute for Plant Genetics and Crop Plant Research, Corrensstrasse 3, 06466 Gatersleben, GermanyDE