Why are the seeds of this species difficult? The seeds have physical dormancy, which can be overcome by scarifying the seed coat or using a dry heat treatment.
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This species has Orthodox seeds - dry to 15-20% eRH and store at -20ºC, or as cool as possible.
The seeds of this species are Physically Dormant.
Scarify the seeds by chipping the seed coat with a scalpel. Germinate on agar, germination paper (top of paper) or sand at 25°C or under an alternating temperature regime of 35/20ºC (with an 8/16hr photoperiod).
If this is not successful, use a dry heat treatment (85-95ºC for 1hr) to overcome dormancy before sowing.
The seeds are pale to light brown at maturity.
Accepted name: Stylosanthes scabra Vogel
Synonyms: Stylosanthes diartha S.F. Blake, Stylosanthes gloiodes S.F. Blake, Stylosanthes plicata S.F. Blake
References and Links
- Baskin, C.C. and Baskin J.M. (1998). Seeds: ecology, biogeography, and evolution of dormancy and germination. Academic Press, USA.
- Cook, B.G., Pengelly, B.C., Brown, S.D., Donnelly, J.L., Eagles, D.A., Franco, M.A., Hanson, J., Mullen, B.F., Partridge, I.J., Peters, M. and Schultze-Kraft, R. (2005). Tropical Forages: an interactive selection tool [CD-ROM]. CSIRO/DPI&F(Qld)/CIAT/ILRI, Brisbane, Australia.
- Food and Agriculture Organization of the United Nations and International Plant Genetic Resources Institute (1994). Genebank Standards. FAO/IPGRI, Rome, Italy.
- International Seed Testing Association (2010). International Rules for Seed Testing: edition 2010. ISTA, Bassersdorf, Switzerland.
- SID (Seed Information Database) - Royal Botanic Gardens, Kew, UK: Stylosanthes scabra.
- Tropical Forages - CSIRO, DPI&F(Qld), CIAT and ILRI, Brisbane, Australia: Stylosanthes scabra.
- Tropicos - Missouri Botanical Garden, USA: Stylosanthes scabra.