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| Klos,Joanna; Sliwinska,Elwira; Kula,Adam; Golczyk,Hieronim; Grabowska-Joachimiak,Aleksandra; Ilnicki,Tomasz; Szostek,Krzysztof; Stewart,Alan; Joachimiak,Andrzej J.. |
| The subgenus Ceratochloa of the genus Bromus includes a number of closely related allopolyploid forms or species that present a difficult taxonomic problem. The present work combines data concerning chromosome length, heterochromatin distribution and nuclear genome size of different 6x, 8x and 12x accessions in this subgenus. Special attention is paid to the karyotype structure and genomic constitution of duodecaploid plants recently found in South America. Hexaploid lineages possess six almost indistinguishable genomes and a nuclear DNA content between 12.72 pg and 15.10 pg (mean 1Cx value = 2.32 pg), whereas octoploid lineages contain the same six genomes (AABBCC) plus two that are characterized by longer chromosomes and a greater DNA content (1Cx = 4.47... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Karyotype; C-banding; Heterochromatin; Flow cytometry; Genome size. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000300016 |
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