Species relationships and genetic variation in the diploid wheats (Triticum, Aegilops) as revealed by starch gel electrophoresis

Thomas Brody, Samuel Mendlinger

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Twenty enzyme loci were examined in the diploid species of Triticum and Aegilops for allelic variation by starch gel electrophoresis. Section Sitopsis, including the five species, Ae. speltoides, Ae. lingissima, Ae. sharonensis, Ae. bicornis and Ae. searsii form a close subgroup with Ae. speltoides slightly removed from the others. T. monococcum s. lat., was found to be closest to the species of the Sitopsis group. Ae. comosa, Ae. umbellulata and Ae. uniaristata form a second subgroup with Ae. caudata most closely related to these species. Ae. squarrosa appears almost equally related to all of the species, showing no special affinity for any one species group. Nineteen out of twenty loci examined were polymorphic with a mean of 6.7 alleles per locus. Species could be, for most loci, characterized by the presence of predominant alleles. A conspicious genetic characteristic of Triticum-Aegilops is the sharing of these predominant alleles between species. Within species variation is characterized by a diffuse distribution of secondary alleles.

Original languageEnglish
Pages (from-to)247-258
Number of pages12
JournalPlant Systematics and Evolution
Volume136
Issue number3-4
DOIs
StatePublished - 1 Sep 1980
Externally publishedYes

Keywords

  • Aegilops
  • Angiosperms
  • Poaceae (=Gramineae)
  • Starch Gel electrophoresis
  • Triticum
  • allozymic variation
  • diploid species
  • evolution
  • phylogenetic relationships

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

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