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Type: Journal article
Title: Stimulation of germination of Quandong (Santalum acuminatum) and other Australian native plant seeds
Author: Loveys, B.
Jusaitis, M.
Citation: Australian Journal of Botany, 1994; 42(5):565-574
Publisher: CSIRO
Issue Date: 1994
ISSN: 0067-1924
Statement of
B. R. Loveys and M. Jusaitis
Abstract: Intact seeds of quandong (Santalum acuminatum), Ixodia achillaeoides, Ptilotus exaltatus, Codonocaupus pyramidalis and Exocarpos aphyllus which are normally difficult to germinate responded to vacuum infiltration with gibberellins. In most cases GA4 was far more effective than GA3. Cytokinins, ethylene and silver ions did not affect quandong germination but abscisic acid (ABA) was inhibitory. If imbibed quandong seeds were subject to a rapid drying and re-wetting cycle, subsequent germination was inhibited. This transient drying was associated with a rise in endogenous ABA and the effect of the drying could be overcome by gibberellin. There was no correlation between ABA level and state of dormancy in recently imbibed seed suggesting that ABA was not necessary for the maintenance of dormancy. These results suggest that the mechanisms controlling quandong seed germination are hormonally based although the mechanical constraints imposed by the rigid shell may also be important.
Rights: © CSIRO 1994
RMID: 0030000534
DOI: 10.1071/BT9940565
Appears in Collections:Earth and Environmental Sciences publications

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