Phenolic compounds as chemical markers of low taxonomic levels in the family Poaceae
Mika, V.(Vyzkumny Ustav Rostlinne Vyroby, Jevicko (Czech Republic). Vyzkumna Stanice Travnich Ekosystemu)E-mail:[email protected] | Kuban, V.(Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic)) | Klejdus, B.(Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic)) | Odstrcilova, V.(Vyzkumny Ustav Rostlinne Vyroby, Jevicko (Czech Republic). Vyzkumna Stanice Travnich Ekosystemu) | Nerusil, P.(Vyzkumny Ustav Rostlinne Vyroby, Jevicko (Czech Republic). Vyzkumna Stanice Travnich Ekosystemu)
The spectra of non-structural phenolics in herbage were used to study genetic affinity in a polyploid complex of Dactylis, in a complex of octoploid brome species, and in a red fescue cultivar collection. The diploid (2n=14) subspecies of Dactylis revealed distinct differences from the tetraploid (2n=28) ones as a clearly specialized group. In the genus Bromus, the affinity bounds of the species inside the section (e.g. Ceratochloa) were not very tight in comparison with those between the species from various sections. Remarkable differences in affinity bonds were also determined among red fescue cultivars. Our results demonstrate that phenolic profiles could be used as markers in grass taxonomy. As they are not environmentally so stable as the markers of primary metabolism, the plant material should be standardized before being analysed.
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