Environmental influences during seed maturation and storage affecting germinability in Spergularia diandra genotypes inhabiting the Negev Desert, Israel

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9 Scopus citations

Abstract

Spergularia diandra is a common annual in the Negev Desert. In one population near Sede Boker nine types of seeds with differing germinability were found. These comprised three genotypes, producing glabrous, hairy or partially hairy seeds. Within each genotype, three coloured phenotypes mature: black, brown and yellow seeds. The plants produce large numbers of tiny seeds which display an opportunistic strategy of low germination percentages which may be regulated by day length and temperature during seed maturation, seed position on the plant and length of storage. This is of great importance for survival of this species, especially in extreme deserts with small unpredictable amounts and distribution of rain.

Original languageEnglish
Pages (from-to)313-323
Number of pages11
JournalJournal of Arid Environments
Volume34
Issue number3
DOIs
StatePublished - 1 Jan 1996

Keywords

  • day length
  • genotypes
  • phenotypes
  • seed coat colour
  • seed coat structure
  • seed germination
  • temperature

ASJC Scopus subject areas

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

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