Chromosome numbers and pollen fertility in the Senecio nemorensis group (Compositae) in the Carpathians
Hodalova, I.(Slovak Academy of Sciences, Bratislava (Slovak Republic). Institute of Botany | Kochjarova, J.Comenius University, Bratislava (Slovak Republic). Botanical Garden)
New chromosome numbers for two species from the Senecio nemorensis group: S. dacicus (2n = 40) and S. ucranicus (2n = 40) have been ascertained. The counts for S. germanicus WALLR. subsp. germanicus (2n = 40), S. hercynicus Herborg subsp. hercynicus (2n = 40), S. ovatus (P. GAERTN. et al.) WlLLD. subsp. ovatus (2n = 40) occurring in the Carpathians are also reported. The study confirmed only the known tetraploid chromosome number for the taxa of this group. The pollen fertility ranged from 82.09 to 92.99% in all examined species and subspecies, including their hybrids.
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