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Two-hundred-year seed survival of Leucospermum and two other woody species from the Cape Floristic region, South Africa

Published online by Cambridge University Press:  01 June 2007

Matthew I. Daws ,
Jennifer Davies ,
Elly Vaes ,
Roelof van Gelder  and
Hugh W. Pritchard
Matthew I. Daws*
Affiliation:
Seed Conservation Department, Royal Botanic Gardens Kew, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK
Jennifer Davies
Affiliation:
Seed Conservation Department, Royal Botanic Gardens Kew, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK
Elly Vaes
Affiliation:
Seed Conservation Department, Royal Botanic Gardens Kew, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK
Roelof van Gelder
Affiliation:
The National Archives, Kew, Richmond, Surrey, TW9 4DU, UK NRC Handelsblad, Herengracht 545-549, 1017 BW Amsterdam, The Netherlands
Hugh W. Pritchard
Affiliation:
Seed Conservation Department, Royal Botanic Gardens Kew, Wakehurst Place, Ardingly, West Sussex, RH17 6TN, UK
*
*Correspondence Fax: +44 (0)1444 894110 Email: [email protected]
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Abstract

The ability of orthodox seeds to survive long-term dry storage is a key prerequisite for ex situ seed conservation in genebanks. However, only a few credible observations of seed survival for ≥ 200 years have been reported. In this paper, seed survival is shown for three species under suboptimal storage conditions for a documented time of ≥ 203 years and carbon dated at 218–270 years. Two species that germinated are in the Fabaceae (Liparia sp. and Acacia sp.). A water-impermeable seed coat, and hence an inability to equilibrate with ambient relative humidity, may contribute to long-term survival of these species. The third species that germinated (Leucospermum sp.) does not have a water-impermeable seed coat, and long-term survival may be linked to an oxygen-impermeable barrier in the seed. These results for species from the Cape Floristic Region, South Africa, suggest adaptation for extreme longevity in seeds of species of seasonally dry, Mediterranean environments.

Keywords

FabaceaeLeucospermumlongevityProteaceaeseedstorage
Type
Research Article
Information
Seed Science Research , Volume 17 , Issue 2 , June 2007 , pp. 73 - 79
Copyright
Copyright © Cambridge University Press 2007

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References

Beal, W.J. (1905) The vitality of seeds. Botanical Gazette 40, 140–143.CrossRefGoogle Scholar
Bewley, J.D. and Black, M. (1982) Physiology and biochemistry of seeds in relation to germination. Vol. 2.Viability, dormancy and environmental control. New York, Springer-Verlag.CrossRefGoogle Scholar
Boubriak, I., Kargiolaki, H., Lyne, L. and Osborne, D.J. (1997) The requirement for DNA repair in desiccation tolerance of germinating embryos. Seed Science Research 7, 97–105.Google Scholar
Brits, G.J., Cutting, J.G.M., Brown, N.A.C. and van Staden, J. (1995) Environmental and hormonal-regulation of seed dormancy and germination in Cape fynbos Leucospermum RBR (Proteaceae) species. Plant Growth Regulation 17, 181–193.CrossRefGoogle Scholar
Brown, N.A.C. and Botha, P.A. (2004) Smoke seed germination studies and a guide to seed propagation of plants from the major families of the Cape Floristic Region, South Africa. South African Journal of Botany 70, 559–581.Google Scholar
Brown, N.A.C. and Duncan, G. (2006) Grow fynbos plants. Kirstenbosch Gardening Series. Cape Town, South African National Biodiversity Institute.Google Scholar
Brown, N.A.C., van Staden, J., Daws, M.I. and Johnson, T. (2003) Patterns in the seed germination response to smoke in plants from the Cape Floristic Region, South Africa. South African Journal of Botany 69, 514–525.CrossRefGoogle Scholar
Ellis, R.H. and Roberts, E.H. (1980) Improved equations for the prediction of seed longevity. Annals of Botany 45, 13–30.CrossRefGoogle Scholar
Godwin, H. (1968) Evidence for longevity of seeds. Nature 220, 708–709.CrossRefGoogle Scholar
Hyde, E.O.C. (1954) The function of the hilum in some Papilionaceae in relation to the ripening of the seed and the permeability of the testa. Annals of Botany 18, 241–256.CrossRefGoogle Scholar
Kivilaan, A. and Bandurski, R.S. (1981) The one hundred-year period for Dr. Beal's seed viability experiment. American Journal of Botany 68, 1290–1292.CrossRefGoogle Scholar
Kranner, I., Birtic, S., Anderson, K.M. and Pritchard, H.W. (2006) Glutathione half-cell reduction potential: A universal stress marker and modulator of programmed cell death? Free Radical Biology and Medicine 40, 2155–2165.CrossRefGoogle ScholarPubMed
Kuo, W.H.J., Shan, M-L. and Tseng, M-T. (1990) Effects of temperature and seed moisture content on the longevity of sorghum seeds. Journal of the Agricultural Association of China, New Series 149, 32–41.Google Scholar
Libby, W.F. (1955) Radiocarbon dating (2nd edition). Chicago, University of Chicago Press.Google Scholar
Medeiros, A.C.S., Probert, R.J., Sader, R. and Smith, R.D. (1998) The moisture relations of seed longevity in Astronium urundeuva (Fr. All.) Engl. Seed Science and Technology 26, 289–298.Google Scholar
Murdoch, A.J. and Ellis, R.H. (2000) Dormancy, viability and longevity. pp. 183–214in Fenner, M. (Ed.) Seeds: The ecology of regeneration in plant communities (2nd edition). Wallingford, CABI Publishing.CrossRefGoogle Scholar
Odum, S. (1965) Germination of ancient seeds. Floristic observations and experiments with archaeologically dated soil samples. Dansk Botanisk Arkiv 24, 1–70.Google Scholar
Porsild, A.E., Harrington, C.R. and Mulligan, G.A. (1967) Lupinus arcticus Wats. grown from seeds of Pleistocene age. Science 158, 113–114.Google Scholar
Priestley, D.A. (1986) Seed aging: Implications for seed storage and persistence in the soil. London, Comstock Associates.Google Scholar
Pritchard, H.W. and Dickie, J.B. (2003) Predicting seed longevity: the use and abuse of seed viability equations. pp. 655–721in Smith, R.D.; Dickie, J.B.; Linington, S.H.; Pritchard, H.W.; Probert, R.J. (Eds) Seed conservation: Turning science into practice. London, Royal Botanic Gardens, Kew.Google Scholar
Roberts, E.H. (1973) Predicting the storage life of seeds. Seed Science and Technology 1, 499–514.Google Scholar
Shen-Miller, J. (2002) Sacred lotus, the long-living fruits of China Antique. Seed Science Research 12, 131–143.CrossRefGoogle Scholar
Shen-Miller, J., Schopf, J.W., Harbottle, G., Cao, R.J., Ouyang, S., Zhou, K.S., Southon, J.R. and Liu, G.H. (2002) Long-living lotus: Germination and soil gamma-irradiation of centuries-old fruits, and cultivation, growth, and phenotypic abnormalities of offspring. American Journal of Botany 89, 236–247.Google Scholar
Slota, P.J., Jull, A.J.T., Linick, T.W. and Toolin, L.J. (1987) Preparation of small samples for 14C accelerator targets by catalytic reduction of CO. Radiocarbon 29, 303–306.CrossRefGoogle Scholar
Steiner, A.M. and Ruckenbauer, P. (1995) Germination of 110-year-old cereal and weed seeds, the Vienna sample of 1877. Verification of effective ultra-dry storage at ambient temperature. Seed Science Research 5, 195–199.CrossRefGoogle Scholar
Telewski, F.W. and Zeevaart, J.A.D. (2002) The 120-yr period for Dr. Beal's seed viability experiment. American Journal of Botany 89, 1285–1288.CrossRefGoogle ScholarPubMed
Thompson, K. (2000) The functional ecology of soil seed banks. pp. 215–236in Fenner, M. (Ed.) Seeds: The ecology of regeneration in plant communities (2nd edition). Wallingford, CABI Publishing.CrossRefGoogle Scholar
Tompsett, P.B. (1994) Capture of genetic resources by collection and storage of seed: a physiological approach. pp. 61–71in Leakey, R.R.B.; Newton, A.C. (Eds) Tropical trees: The potential for domestication and the rebuilding of forest resources. ITE Symposium No. 29, ECTF Symposium No. 1. London, HMSO.Google Scholar
Villiers, T.A. (1974) Seed aging: chromosome stability and extended viability of seeds stored fully imbibed. Plant Physiology 53, 875–878.CrossRefGoogle Scholar
Walters, C., Wheeler, L.M. and Grotenhuis, J.M. (2005) Longevity of seeds stored in a genebank: species characteristics. Seed Science Research 15, 1–20.CrossRefGoogle Scholar