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  1. 2 Genetica Polonica

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  1. 2 1993

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  1. 2 Naganowska B.

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1

Karyotypes of five Bromus species of Genea section

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Naganowska B.
Genetica Polonica
|
1993
|
vol. 34
|
issue 3
197-213
EN
Karyotypes of five of Genea section Bromus fasciculatus, B.sterilis, B.tectorum, B.madritensis and B.rubens were examined to determine relations between them. The absolute and relative as well as the centromere index, were analysed. Idiograms of the investigated species were presented. A comparison of the species in their chromosome features revealed significant differences between diploids (B.fasciculatus, B.sterilis and B.tectorum) and similarity between tetraploids (B.madritensis and B.rubens). It also appeared that diploid B.tectorum is similar to tetraploid species, which may be indicative of the genome affinity between these three species.
2

Cytophometric analysis of DNA content in cell nuclei of five Bromus species of Genea section

100%
Naganowska B.
Genetica Polonica
|
1993
|
vol. 34
|
issue 3
215-221
EN
The total nuclear DNA content was cytophotometrically measured in five Bromus species of Genea section (B.tectorum, B.sterilis, B.fasciculatus, B.madritensis, B.rubens). Difference between the tetraploid species B. madritensis and B. rubens was statistically nonsignificant (DNA content - 11.7 and 13.7 pg, respectively). Nuclear DNA content in the diploids B. fasciculatus and B. sterilis was similar (6.3 and 7.5 pg, respectively), but differed from that of other studied species. In B. tectorum (diploid) the totatl DNA content (9.3 pg) was closer to that of the tetraploid B. madritensis. A partial consistency of the results obtained from the analysis of nuclear DNA content in this work with those from karyotype examination Naganowska 1993 suggests relations between the studied species may be of phylogenetic character.
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