Theoretical and Applied Genetics

, Volume 75, Issue 4, pp 651–658

Ecogeographical distribution of HMW glutenin alleles in populations of the wild tetraploid wheat Triticum turgidum var. dicoccoides

Authors

  • A. A. Levy
    • Department of Plant GeneticsThe Weizmann Institute of Science
  • M. Feldman
    • Department of Plant GeneticsThe Weizmann Institute of Science
Originals

DOI: 10.1007/BF00289134

Cite this article as:
Levy, A.A. & Feldman, M. Theoret. Appl. Genetics (1988) 75: 651. doi:10.1007/BF00289134
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Summary

Polymorphism of high molecular weight (HMW) glutenin subunits in 466 accessions of the wild tetraploid wheat Triticum turgidum var. dicoccoides in Israel was characterized with regard to the ecogeographical distribution of the HMW glutenin alleles, both between and within 22 populations, and along transects in a single population. While some populations were monomorphic for all the HMW glutenin loci, namely, Glu-A1-1, Glu-A1-2, Glu-B1-1 and Glu-B1-2, others contained up to four alleles per locus. Intrapopulation variability could be predicted by the geographical distribution: marginal populations tended to be more uniform than those at the center of distribution. The various HMW glutenin alleles tended to be clustered, both at a regional level and within a single population along transects of collection. It is suggested that this clustering is due to selection pressures acting both at a regional and at a microenvironmental level. This was confirmed by the significant correlations found between the MW of subunits encoded by Glu-A1-1 and the populations' altitude, average temperature and rainfall. The possible selective values of seed storage proteins are discussed.

Key words

Wild tetraploid wheatSelective valueSeed storage proteins

Copyright information

© Springer-Verlag 1988