Reproductive biology of Eupatorium cannabinum (Asteraceae) introduced in the South of Tomsk region.
Eupatorium cannabinum L. is a valuable medicinal, ornamental and melliferous plant. The combination of valuable pharmacologic properties (anxiolytic, anti-oxidative, hepatoprotective, sudorific, choleretic and antiviral activities) is the special feature of this species. The long-term (2007-2011) observations of reproductive biology including the rhythm of development, flowering and pollination, microsporogenesis, seed production and seed germination of E. cannabinum under introduction were carried out. It was revealed, that in the South of Tomsk region E. cannabinum had a high percentage of seed productivity, stable karyotype and normal microsporogenesis that indicates plasticity and the adaptation of species to new conditions.