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The use of fluorochromes in the cytogenetics of the small-grained cereals (Triticeae)


Histochemical Journal 26(6): 471-479
The use of fluorochromes in the cytogenetics of the small-grained cereals (Triticeae)
This paper describes some of the major advances that have been made in the cytogenetics of the small-grained cereals (Triticeae) using fluorochromes to detect nucleic acids in situ. The method, widely known as fluorescence in situ hybridization, has made a contribution in several areas including (i) chromosome mapping programmes, and (ii) cereal breeding programmes. Flow cytometry of cereal chromosomes has now been developed for the generation of chromosome enriched libraries; these libraries will ultimately be of use in both the cereal mapping and breeding programmes. Fluorescence in situ hybridization has also made a major contribution to the understanding of cereal genome structure by elucidating the distribution of different classes of DNA sequence. By using suitable nucleic acid probes whole chromosomes can now be identified in interphase nuclei. The labelling patterns have revealed a structured arrangement of chromosomes at interphase. Not only are chromosomes organized but the ribosomal RNA genes also show structured patterns of condensation and expression. Progress in each of these areas has been rapid in recent years and this progress is described.

Accession: 002530322

PMID: 7928400

DOI: 10.1007/bf00157892

Download PDF Full Text: The use of fluorochromes in the cytogenetics of the small-grained cereals (Triticeae)



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