Theoretical and Applied Genetics

, Volume 85, Issue 6, pp 673-680

First online:

Chromosomal rearrangements in the rye genome relative to that of wheat

  • Katrien M. DevosAffiliated withCambridge Laboratory
  • , M. D. AtkinsonAffiliated withCambridge Laboratory
  • , C. N. ChinoyAffiliated withCambridge Laboratory
  • , H. A. FrancisAffiliated withCambridge Laboratory
  • , R. L. HarcourtAffiliated withCambridge Laboratory
  • , R. M. D. KoebnerAffiliated withCambridge Laboratory
  • , C. J. LiuAffiliated withCambridge Laboratory
  • , P. MasojćAffiliated withDepartment of Plant Breeding, Academy of Agriculture
  • , D. X. XieAffiliated withCambridge Laboratory
    • , M. D. GaleAffiliated withCambridge Laboratory

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An RFLP-based genetic map of Secale Cereale has provided evidence for multiple evolutionary translocations in the rye genome relative to that of hexaploid wheat. DNA clones which have previously been mapped in wheat indicated that chromosome arms 2RS, 3RL, 4RL, 5RL, 6RS, 6RL, 7RS and 7RL have all been involved in at least one translocation. A possible evolutionary pathway, which accounts for the present day R genome relative to the A, B and D genomes of wheat, is presented. The relevance of these results for strategies designed to transfer useful genes from rye, and probably other related species, to wheat is discussed.

Key words

Translocations Rye RFLP Genetic maps Comparative mapping Co-linearity