Coastal Restoration Trust of New Zealand

Coastal Dune Ecosystem Reference Database

Biosystematics of higher plants in New Zealand 1965-1984 Journal Paper

Author
Connor, H.E.
Year
1985
Journal / Source
New Zealand Journal of Botany
Volume
23
Pages
613-643
Keywords
Sarcocornia quinquejlora ssp. quinquejlora, Salicornieae, reproductive systems, ~ermaphroditism, gynodioecism, male-sterility, Wind pollination, sex-form frequency, dichogamy
Summary
Sarcocornia quinquejlora in New Zealand consists of populations of hermaphrodite plants except in Golden and Tasman Bays, at F~xton, and on the Otago Peninsula where the species is gynodioecious. Among Nelson populations the frequency of female plants (F) ranged from 0.12 to 0.53; at Aramoana, Otago Harbour, females were not as frequent lying within the values 0.05 < F < 0.10. S. qumquejlora is protogynous and in the gynodioecious populations stigma exsertion from female flowers coincides with anther exsertion from hermaphrodite flowers. Gynodioecism is found in other Southern Hemisphere species of Sarcocornia; the possible evolutionary pathway to gynodioecism is outlined. Other rep~oductive systems found in the Salicornieae are discussed and related to the frequency of gynodioecism.