Dormancy of Hordeum spontaneum caryopses from a population on the Negev desert highlands

Yitzchak Gutterman, Françoise Corbineau, Daniel Côme

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Freshly harvested caryopses of Hordeum spontaneum do not germinate, even after a long period of imbibition at 10, 20 and 30 °C, in darkness or in continuous white light. Their dormancy results from an inhibitory effect of the covering structures, since isolated embryos are able to germinate. Breaking of dormancy, termed 'after-ripening', occurs during storage in dry conditions at 35 °C or in the natural habitat during summer. Dormancy remains when caryopses in dispersal units are stored at -35 °C. The ecological importance of dormancy and after-ripening at high temperatures affecting the 'readiness for germination' is discussed.

Original languageEnglish
Pages (from-to)337-345
Number of pages9
JournalJournal of Arid Environments
Volume33
Issue number3
DOIs
StatePublished - 1 Jan 1996

Keywords

  • after-ripening
  • dispersal units
  • dormancy
  • dry storage
  • germination
  • light and dark conditions
  • temperature

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Earth-Surface Processes

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