Edaphic microsatellite DNA divergence in wild emmer wheat, Triticum dicoccoides, at a microsite: Tabigha, Israel
Li, Y. C. ; Fahima, T. ; Peng, J. H. ; Röder, M.S. ; Kirzhner, V. M. ; Beiles, A. ; Korol, A. B. ; Nevo, E.
Springer
Published 2000
Springer
Published 2000
| ISSN: |
1432-2242
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| Keywords: |
Key words Genetic diversity ; Edaphic selection ; Microsatellite ; Microsite divergence ; Wild emmer wheat ; Triticum dicoccoides
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Biology
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| Notes: |
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.
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| Type of Medium: |
Electronic Resource
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| URL: |