Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-26T07:33:19.607Z Has data issue: false hasContentIssue false

Are seed dormancy and persistence in soil related?

Published online by Cambridge University Press:  22 February 2007

Ken Thompson*
Affiliation:
Department of Animal and Plant Sciences, The University of Sheffield, Sheffield S10 2TN, UK
Roberta M. Ceriani
Affiliation:
Dipartimento di Biologia Strutturale e Funzionale, Università degli Studi dell'Insubria, Via J.H. Dunant 3, 21100 Varese, Italy
Jan P. Bakker
Affiliation:
Laboratory of Plant Ecology, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands
Renée M. Bekker
Affiliation:
Laboratory of Plant Ecology, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands
*
*Correspondence Fax: +44 0114 2220015, Email: ken.thompson@sheffield.ac.uk

Abstract

There is confusion in the ecological literature between seed dormancy and persistence in soil. Some ecologists seem to assume that dormancy is necessary for persistence, while others imply that dormancy and persistence are virtually synonymous. Here, we show that there is no close relationship between dormancy and persistence and, incidentally, that conventional methods of investigating soil seed banks underestimate the persistence of species with dormant seeds. The confusion appears to arise from the concept of ‘enforced dormancy’, which is not genuinely dormancy at all, and would be eliminated if ecologists adopted the definition of dormancy employed by physiologists. Dormancy is a characteristic of the seed, not of the environment, the degree of which defines the conditions required to make the seed germinate.

Type
Research Opinion
Copyright
Copyright © Cambridge University Press 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Baskin, C.C. and Baskin, J.M. (1988) Germination ecophysiology of herbaceous plant species in a temperate region. American Journal of Botany 75, 286305.CrossRefGoogle Scholar
Baskin, C.C. and Baskin, J.M. (1998) In Seeds; Ecology, biogeography and evolution of dormancy and germination. San DiegoAcademic Press.Google Scholar
Blaney, C.S. and Kotanen, P.M. (2001) Effects of fungal pathogens on seeds of native and exotic plants: a test using congeneric pairs. Journal of Applied Ecology 38, 11041113.CrossRefGoogle Scholar
Cavieres, L.A. and Arroyo, M.T.K. (2001) Persistent soil seed banks in Phacelia secunda (Hydrophyllaceae): experimental detection of variation along an altitudinal gradient in the Andes of central Chile (33 degrees S). Journal of Ecology 89, 3139.CrossRefGoogle Scholar
Eira, M.T.S. and Caldas, L.S. (2000) Seed dormancy and germination as concurrent processes. Revista Brasileira de Fisiologia Vegetal 12, 85104.Google Scholar
Grappin, P., Bouinot, D., Sotta, B., Miginiac, E. and Jullien, M. (2000) Control of seed dormancy in Nicotiana plumbaginifolia: post-imbibition abscisic acid synthesis imposes dormancy maintenance. Planta 210, 279285.CrossRefGoogle ScholarPubMed
Grime, J.P., Mason, G., Curtis, A.V., Rodman, J., Band, S.R., Mowforth, M.A.G., Neal, A.M. and Shaw, S. (1981) A comparative study of germination characteristics in a local flora. Journal of Ecology 69, 10171059.CrossRefGoogle Scholar
Harper, J.L. (1959) The ecological significance of dormancy. pp. 415420. in in Proceedings of the IV international congress of crop protection. Braunschweig, Internationalen Pflanzenschutz-Kongresses.Google Scholar
Harper, J.L. (1977) Population biology of plants. London, Academic Press.Google Scholar
Hendry, G.A.F., Thompson, K., Moss, C.J., Edwards, E. and Thorpe, P.C. (1994) Seed persistence: a correlation between seed longevity in the soil and ortho-dihydroxyphenol concentration. Functional Ecology 8, 658664.CrossRefGoogle Scholar
Murdoch, A.J. and Ellis, R.H. (2000) Dormancy, viability and longevity. pp. 183214. in Fenner, M. (Ed.) Seeds: The ecology of regeneration in plant communities. (2nd edition). Wallingford, UK, CABI Publishing.CrossRefGoogle Scholar
Peart, M.H. (1984) The effects of morphology, orientation and position of grass diaspores on seedling survival. Journal of Ecology 72, 437453.CrossRefGoogle Scholar
Rees, M. (1994) Delayed germination of seeds: a look at the effects of adult longevity, the timing of reproduction, and population age/stage structure. American Naturalist 144, 4364.CrossRefGoogle Scholar
Rees, M. (1997) Seed dormancy. pp. 214238in Crawley, M.J. (Ed.) Plant ecology. (2nd edition). Oxford, Blackwell.Google Scholar
Schütz, W. (2000) Ecology of seed dormancy and germination in sedges (Carex). Perspectives in Plant Ecology, Evolution and Systematics 3, 6789.CrossRefGoogle Scholar
Ter Heerdt, G.N.J., Verweij, G.L., Bekker, R.M. and Bakker, J.P. (1996) An improved method for seed bank analysis: seedling emergence after removing the soil by sieving. Functional Ecology 10, 144151.CrossRefGoogle Scholar
Thompson, K., Band, S.R. and Hodgson, J.G. (1993) Seed size and shape predict persistence in soil. Functional Ecology 7, 236241.CrossRefGoogle Scholar
Thompson, K., Bakker, J.P. and Bekker, R.M. (1997) The soil seed banks of north west Europe: Methodology, density and longevity. Cambridge, Cambridge University Press.Google Scholar
Thompson, K., Bakker, J.P., Bekker, R.M. and Hodgson, J.G. (1998) Ecological correlates of seed persistence in soil in the north-west European flora. Journal of Ecology 86, 163169.CrossRefGoogle Scholar
Thompson, K., Jalili, A., Hodgson, J.G., Hamzeh'ee, B., Asri, Y., Shaw, S., Shirvany, A., Yazdani, S., Khoshnevis, M., Zarrinkamar, F., Ghahramani, M.-A. and Safavi, R. (2001) Seed size, shape and persistence in the soil in an Iranian flora. Seed Science Research 11, 345355.Google Scholar
Traba, J., Levassor, C. and Peco, B. (1998) Concentrating samples can lead to seed losses in soil bank estimations. Functional Ecology 12, 975976.Google Scholar
Venable, D.L. and Brown, J.S. (1988) The selective interactions of dispersal, dormancy, and seed size as adaptations for reducing risk in variable environments. American Naturalist 131, 360384.CrossRefGoogle Scholar
Vleeshouwers, L.M., Bouwmeester, H.J. and Karssen, C.M. (1995) Redefining seed dormancy: an attempt to integrate physiology and ecology. Journal of Ecology 83, 10311037.CrossRefGoogle Scholar