Figure 1.

Distribution of 45S rDNA, Type III and CsRP1 sequences on cucumber metaphase chromosomes 2 and 4. a-b Minor Type III (green) signals in the interstitial regions of chromosome pairs 2 (arrows) and 4 (arrowheads). c The 45S rDNA (red) signals occupied the exclusive constriction region and the signals of major and minor Type III satellite repeat flanked the constriction on chromosome pairs 2 (arrows) and 4 (arrowheads). d-f The minor Type III (green) signals were colocalized with strong signals of the CsRP1 (red) on chromosome pairs 2 (arrows) and 4 (arrowheads). Bars, 5 μm