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Acta Biologica Hungarica

, Volume 66, Issue 2, pp 231–241 | Cite as

Factors Affecting Reproductive Success in Three Entomophilous Orchid Species in Hungary

  • Anna E. VojtkóEmail author
  • Judit Sonkoly
  • Balázs András Lukács
  • Attila Molnár V.
Article

Abstract

The reproductive success of orchids is traditionally estimated by determining the fruit-set of individuals. Here, we investigated both the fruit and the seed production of three orchid species and the factors that may affect individual fruit-set, like pollination strategy, individual traits or the annual amount of precipitation. The species [Dactylorhiza sambucina (L.) Soó, Dactylorhiza majalis (Rchb.) P. F. Hunt & Summerhayes and Platanthera bifolia (L.) L. C. M. Richard] were studied in three consecutive years (2010–2012) in the Bükk Mountains, Hungary. All three species were proved to be non-autogamous by a bagging experiment. Data analyses showed significant differences between seed numbers but not between fruit-sets of species. There was no statistical difference in individual reproductive success between wet and dry years, however, the effect of the annual amount of precipitation is significant on the population level. Comparison of published fruit-set data revealed accordance with our results in P. bifolia, but not in D. sambucina and D. majalis. We assume that the surprisingly high fruit-set values of the two Dactylorhiza species may be due to the fact that the pollination crisis reported from Western European countries is not an actual problem in the Bükk Mountains, Hungary.

Keywords

Dactylorhiza majalis Dactylorhiza sambucina fruit-set Platanthera bifolia pollination crisis 

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© Akadémiai Kiadó, Budapest 2015

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Anna E. Vojtkó
    • 1
    Email author
  • Judit Sonkoly
    • 2
  • Balázs András Lukács
    • 1
  • Attila Molnár V.
    • 3
  1. 1.Department of Tisza Research, Danube Research InstituteMTA Centre for Ecological ResearchDebrecenHungary
  2. 2.Department of Ecology, Faculty of Science and TechnologyUniversity of DebrecenDebrecenHungary
  3. 3.Department of Botany, Faculty of Science and TechnologyUniversity of DebrecenDebrecenHungary

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