Cereal Research Communications

, Volume 33, Issue 4, pp 673–680 | Cite as

Demonstration of Aegilops biuncialis chromosomes in a wheat background by genomic in situ hybridization (GISH) and identification of U chromosomes by FISH using GAA sequences

  • István MolnárEmail author
  • Annamária Schneider
  • Márta Molnár-Láng


The aims of the study were the optimisation of genomic in situ hybridization (GISH) and the use of a GAA satellite sequences as a fluorescence in situ hybridization (FISH) probe to discriminate Aegilops biuncialis and wheat chromosomes. The application of genomic DNA from the diploid progenitors, Ae. umbellulata and Ae. comosa, as a probe with a blocking ratio of 1:200 resulted in the clear visualization of Ae. biuncialis chromosomes. Based on the strong hybridization signals of the PCR-amplified GAA satellite sequences it was possible to identify chromosomes 1U, 2U, 4U and 5U of Ac. umbellulata. The improved GISH and GAA idiogram presented here allow the Ae. biuncialis chromatin to be traced in more detail during chromosome-mediated gene transfer to wheat.

Key words

Aegilops biuncialis Aegilops umbellulata GISH FISH GAA banding 


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© Akadémiai Kiadó, Budapest 2005

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • István Molnár
    • 1
    Email author
  • Annamária Schneider
    • 1
  • Márta Molnár-Láng
    • 1
  1. 1.Agricultural Research Institute of the Hungarian Academy of SciencesMartonvásárHungary

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