A comparative study of seed germination of two Alliumspecies from different habitats in the Negev Desert highlands

Y. Gutterman, R. Kamenetsky, M. Van Rooyen

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Seed germination of Allium truncatum and Allium rothii from natural populations in the Negev were compared over a range of NaCl concentrations, naturally fluctuating or constant temperatures, light and dark. No germination occurred after the first 7 days of imbibition. The fastest germination was at 10 and 15°C but there was none at 25°C. The higher the NaCl concentration, the lower the germination. Allium truncatum plants inhabit wadis with crowded vegetation and the seeds germinate in the dark better than in the light, in natural and constant temperatures. Allium rothii plants inhabit open areas. There is no difference between germination in light and dark, in constant 5 to 15°C. Germination at 20°C in light is higher than in dark and in naturally fluctuating temperatures the germination in dark is higher.

Original languageEnglish
Pages (from-to)305-315
Number of pages11
JournalJournal of Arid Environments
Volume29
Issue number3
DOIs
StatePublished - 1 Jan 1995

Keywords

  • NaCl concentrations
  • adaptation
  • geophytes
  • germination
  • light or dark
  • natural and constant temperatures

ASJC Scopus subject areas

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

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