Folia Geobotanica

, Volume 47, Issue 1, pp 17–27

Effects of Incubation Temperature on Seed Germination of Mediterranean Plants with Different Geographical Distribution Ranges

  • Belén Luna
  • Beatriz Pérez
  • Iván Torres
  • José Manuel Moreno
Article

Abstract

Little is known about consequences of the increasing global temperatures on seed germination and even less about the seed germination response of species with different geographical distribution ranges. In the present work, the effect of incubation temperature on seed germination of 31 species from the Iberian Peninsula is analyzed in relation to their geographical distribution range. We tested whether plants with different geographical distribution ranges (Iberian Peninsula endemics, Mediterranean, widely distributed species), respond similarly to incubation temperature using cross-species analysis as well as taking into account phylogenetic relationships among species. Seeds were incubated at 10°C, 15°C, 20°C and 25°C for 6 weeks in darkness. Distribution range appeared as a determinant of germination response to the temperature treatment independent of phylogeny. Widely distributed species were less sensitive than endemic or Mediterranean species to incubation temperatures, which may represent an advantage to colonize new areas or to tolerate changes in the environment. Although their ability to avoid germination during the warm and dry season might be favorable for endemic species in some situations, our results also suggest that under a future of temperature increase imposed by climate change, endemic plant species may be more vulnerable than widely distributed species.

Keywords

Climate change Conservation Iberian Peninsula endemics Mediterranean Summer drought 

Supplementary material

12224_2011_9110_MOESM1_ESM.pdf (15 kb)
ESM 1(PDF 15 kb)

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Copyright information

© Institute of Botany, Academy of Sciences of the Czech Republic 2011

Authors and Affiliations

  • Belén Luna
    • 1
  • Beatriz Pérez
    • 1
  • Iván Torres
    • 1
  • José Manuel Moreno
    • 1
  1. 1.Department of Environmental Sciences, Faculty of Environmental SciencesUniversity of Castilla-La ManchaToledoSpain

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