%0 Journal Article
%T Nectar and pollen production of Helianthus tuberosus L. 每 an exotic plant with invasiveness potential
%A Denisow
%A Boˋena
%A Dmitruk
%A Marta
%A Tymoszuk
%A Karolina
%J -
%D 2019
%R 10.2478/botcro-2019-0019
%X Saˋetak In Central Europe, Helianthus tuberosus L. is a late summer/autumn bloomer (August/November). The disc florets produce both nectar and pollen. Floral reward is available in male-phase flowers (pollen and nectar) and in female-phase flowers (nectar). The floral reward is attractive to a variety of insect visitors (honey bees, wasps, flies and butterflies). The season of blooming as well as the total sugar yield (25.4 每 47.4 kg ha每1) and pollen yield (57.8 每 212.7 kg ha每1) indicate that H. tuberosus is important in the enhancement of food resources for pollinators. The generative reproduction in H. tuberosus is impaired (the species does not set seeds/fruits). However, due to its attractiveness for a variety of pollinators in both rural and urban areas, the spread of H. tuberosus should be monitored. Moreover, its propagation needs to be attended with restrictions
%K alien plant
%K Apis mellifera
%K Bombus spp.
%K insect visitors
%K nectar
%K pollen
%U https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=328874