Variation for 11Na uptake in wild emmer wheat, Triticum dicoccoides in israel: Salt tolerance resources for wheat improvement

E. Nevo, J. Gorham, A. Beiles

Research output: Contribution to journalArticlepeer-review


Polymorphisms in 22Na uptake relative to the uptake into T. durum cv. Langdon (RUL), were found among 230 accessions of tetraploid wild emmer wheat, Triticum dicoccoides in Israel. The accessions were collected in 15 populations across the western mesic, and the eastern and southern xeric margins of the Israeli range. The results indicated: (i) widespread genetic variation both within and primarily between populations in22Na uptake. (ii) Remarkably, the xeric eastern and southern populations, characterized by a drier and hotter climate, significantly displayed lower values of relative 22Na uptake as compared with the mesic western populations (0·38 versus 0·61 RUL). (iii) Ecological factors and allozyme markers, either singly or in combination explain up to 81% of the variance in RUL and, therefore, appear to be good guidelines for predicting the ecogeographical location and allozymic constitution of specific low relative 22Na uptake genotypes, which presumably are associated with high salt tolerance. We conclude that T. dicoccoides harbours genetic resources for salt tolerance that can be utilized in wheat improvement by both classical plant breeding and by modern biotechnology.

Original languageEnglish
Pages (from-to)511-518
Number of pages8
JournalJournal of Experimental Botany
Issue number4
StatePublished - Apr 1992

Bibliographical note

Funding Information:
ACKNOWLEDGEMENTS We acknowledge with thanks the financial support of the Wolfson Foundation, the 'Ancell-Teicher Research Foundation for Genetics and Molecular Evolution' established by Florence and Theodore Baumritter, New York, and the Humana Inc., Kentucky, and the Overseas Development Administration of the United Kingdom.


  • 22Na uptake
  • Salt tolerance
  • Triticum dicoccoides
  • Wheat improvement
  • Wild emmer wheat

ASJC Scopus subject areas

  • Physiology
  • Plant Science


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