Nucleolar competition in different (A/B)(A/B)RR and DDRR tetraploid triticales
作者： M C Cermeño , B Friebe , F J Zeller , K-D Krolow
DOI: 10.1038/HDY.1987.1
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摘要: Nucleolar activity was analysed in hybrids between Aegilops squarrosa and Secale cereale or silvestre different tetraploid triticales with A/B mixed genomes, using phase contrast, C-banding Ag-NOR staining techniques. The results revealed that nucleolar of the satellite chromosome pair 1R S. as well suppressed by presence nucleolus organising squarrosa. In all combinations genomes containing pairs 1B 6B only 1B, restricted to chromosomes from B genome while those belonging R rye A wheat were completely suppressed. Satellite active producing nucleoli, missing organizer regions remained inactive.
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