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A field survey of dioecious plants in Israel:sex ratio in seven rare species

Authors
Journal
Botanical Journal of the Linnean Society
0024-4074
Publisher
Wiley Blackwell (Blackwell Publishing)
Publication Date
Volume
134
Issue
3
Identifiers
DOI: 10.1006/bojl.2000.0347
Keywords
  • Breeding Systems
  • Desert
  • Ephedra
  • Mediterranean
  • Sex Determination
  • Sinai.
Disciplines
  • Social Sciences

Abstract

Abstract Sex ratio was tested in seven rare dioecious species in Israel. This was in order to complete a previously published sex ratio survey of the other 41 dioecious species in Israel, and to examine further the hypothesis that sex ratio in natural populations is usually 1:1. One population was tested in each of five rare wild species. In addition, one rare feral population was tested in each of two non-native, naturalized tree species. Sex ratio in all seven species tested was not different from the expected 1:1. These results strengthen the suggestion that in natural populations of dioecious plants sex ratio is usually 1:1.

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