“…GISH has been applied for the identi®cation of parental genomes in natural polyploids such as Triticum aestivum, Milium montianum and other plant species (Bennett et al, 1992;Mukai et al, 1993;Fukui et al, 1997) and in ornamental plants (érgaard et al, 1995;Kuipers et al, 1997). The detection of alien chromatin in interspeci®c crop hybrids has been described and, at higher resolution, chromosomal rearrangements such as translocations of chromosome arms or segments are detectable (HeslopHarrison et al, 1990;Schwarzacher et al, 1992;Kosina and Heslop-Harrison, 1996).…”