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Are seed dormancy and persistence in soil related?

  • Ken Thompson (a1), Roberta M. Ceriani (a2), Jan P. Bakker (a3) and Renée M. Bekker (a3)

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.

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*Correspondence Fax: +44 0114 2220015, Email: ken.thompson@sheffield.ac.uk

References

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Baskin, C.C. and Baskin, J.M. (1988) Germination ecophysiology of herbaceous plant species in a temperate region. American Journal of Botany 75, 286305.
Baskin, C.C. and Baskin, J.M. (1998) In Seeds; Ecology, biogeography and evolution of dormancy and germination. San DiegoAcademic Press.
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.
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.
Eira, M.T.S. and Caldas, L.S. (2000) Seed dormancy and germination as concurrent processes. Revista Brasileira de Fisiologia Vegetal 12, 85104.
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.
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.
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.
Harper, J.L. (1977) Population biology of plants. London, Academic Press.
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.
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.
Peart, M.H. (1984) The effects of morphology, orientation and position of grass diaspores on seedling survival. Journal of Ecology 72, 437453.
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.
Rees, M. (1997) Seed dormancy. pp. 214238in Crawley, M.J. (Ed.) Plant ecology. (2nd edition). Oxford, Blackwell.
Schütz, W. (2000) Ecology of seed dormancy and germination in sedges (Carex). Perspectives in Plant Ecology, Evolution and Systematics 3, 6789.
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.
Thompson, K., Band, S.R. and Hodgson, J.G. (1993) Seed size and shape predict persistence in soil. Functional Ecology 7, 236241.
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.
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.
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.
Traba, J., Levassor, C. and Peco, B. (1998) Concentrating samples can lead to seed losses in soil bank estimations. Functional Ecology 12, 975976.
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.
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.

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