- Title
- Effect of selected environmental factors on the seed germination of the invasive species Polygala myrtifolia (Polygalaceae) in Australia
- Creator
- Roberts, Natalie; Moloney, Katrina; Monie, Kristin; Florentine, Singarayer
- Date
- 2023
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/195840
- Identifier
- vital:18609
- Identifier
-
https://doi.org/10.1071/BT22094
- Identifier
- ISSN:0067-1924 (ISSN)
- Abstract
- Context. Polygala myrtifolia L. has become a significant environmental weed in Australia, where it has invaded coastal ecosystems in temperate regions and there is a high risk of extensive further spread. Knowledge of seed-germination behaviour is essential to understand the potential future impact of this species. Aims. We investigated the effects of selected environmental factors and dormancy on P. myrtifolia seed germination and emergence to improve management strategies. Methods. Seeds were exposed to light, temperature, pH, salinity, osmotic potential and burial depth treatments to assess germination responses, dormancy and viability. Key results. Non-dormant seeds readily germinated to high percentages (93.0–95.0%) under specific day–night temperatures of 25°C–15°C regardless of light conditions and across all soil pH (75.0–100.0%). Salinities were tolerated up to 100 mM NaCl (70.0% germination) before sharply declining. Germination reduced from 98.3% to 40.0% at osmotic potentials of
- Publisher
- CSIRO
- Relation
- Australian Journal of Botany Vol. 71, no. 6 (2023), p. 286-295
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- https://creativecommons.org/licenses/by-nc-nd/4.0/
- Rights
- Copyright © 2023 The Author(s) (or their employer(s))
- Rights
- Open Access
- Subject
- 3103 Ecology; 3104 Evolutionary biology; 3108 Plant biology; Burial depth; Coastal; Dune ecosystem; Salinity; Seed germination; Soil moisture; Temperature; Weeds
- Full Text
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