Physiological dormancy in seeds of tropical montane woody species in Hawai`i

Carol C. Baskin, Jerry M. Baskin, Alvin Yoshinaga, Dustin Wolkis

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Worldwide, there is relatively little information on seed dormancy and germination of tropical montane species. Our aim was to help fill this knowledge gap by conducting seed dormancy/germination studies on woody species from this vegetation zone in Hawai`i. All species had water-permeable seeds with a fully developed embryo. Seeds of 29 species (23 genera) were incubated in light/dark at 15/6, 20/10 and 25/15°C and germination monitored at 2-week intervals for 16–128 weeks. Seeds of Chenopodium oahuense, Dubautia menziesii and Silene lanceolata were non-dormant (ND) and those of 26 other species had physiological dormancy (PD); 10 of the 26 species had conditional PD. The optimum germination temperature regime(s) was (were) 25/15°C, 17 species; 25/10 and 20/10°C, 2; 20/10°C, 6; 20/10 and 15/6°C, 2; and 15/6°C, 2. Worldwide, PD in the woody genera included in our study is more common than ND. In addition to its contribution to the world biogeography of seed dormancy/germination, this study will be useful to conservation biologists who need to germinate seeds of tropical montane species.

Original languageEnglish
Pages (from-to)60-71
Number of pages12
JournalPlant Species Biology
Issue number1
StatePublished - Jan 2021

Bibliographical note

Publisher Copyright:
© 2020 The Society for the Study of Species Biology


  • conditional dormancy
  • fully developed embryo
  • non-dormant seeds
  • physiological dormancy
  • tropical montane zone

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science


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