Bees substitute birds in pollination of ornitogamous climber Campsis radicans (L.) Seem. in Poland

Iwona Kołodziejska-Degórska, Marcin Zych

Abstract


Campsis radicans is an attractive climber with typical ornitogamous flowers, native to North America. In natural conditions this out-crossed plant is pollinated mostly by hummingbirds. In Poland, where C. radicans is cultivated as ornamental, it rarely sets seeds. The questions addressed in the present study were: (1) What animals pollinate its flowers in Poland?, and (2) What is the reason for infrequent fruit set? Field studies conducted in five localities in Poland showed that the principal pollinator is Apis mellifera, and the lack of seeds is usually caused by pollinator limitation or absence of genetically different pollen donor plants.

Keywords


Campsis radicans; pollination; ornitogamy; pollinator shift; Apis mellifera

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DOI: https://doi.org/10.5586/asbp.2006.011

Journal ISSN:
  • 2083-9480 (online)
  • 0001-6977 (print; ceased since 2016)
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Publisher
Polish Botanical Society