Hostname: page-component-7dd5485656-hw7sx Total loading time: 0 Render date: 2025-10-31T03:01:48.275Z Has data issue: false hasContentIssue false
  • English
  • Français

Induction of thermodormancy in Avena sativa seeds

Published online by Cambridge University Press:  19 September 2008

F. Corbineau ,
M. Black  and
D. Côme
F. Corbineau*
Affiliation:
Université Pierre et Marie Curie, Laboratoire de Physiologie Végétale Appliquée, Tour 53, 1er étage, 4 place Jussieu, 75252 Paris cédex 05, France
M. Black
Affiliation:
Université Pierre et Marie Curie, Laboratoire de Physiologie Végétale Appliquée, Tour 53, 1er étage, 4 place Jussieu, 75252 Paris cédex 05, France
D. Côme
Affiliation:
Université Pierre et Marie Curie, Laboratoire de Physiologie Végétale Appliquée, Tour 53, 1er étage, 4 place Jussieu, 75252 Paris cédex 05, France
*
* Correspondence
Get access Rights & Permissions [Opens in a new window]

Abstract

Freshly harvested oat (Avena sativa L.) seeds are considered to be dormant because they are unable to germinate at relatively high temperatures (above 20°–25°C). This primary dormancy results partly from the structures surrounding or adjacent to the embryo (pericarp, testa and endosperm) and partly lies in the embryo itself. Incubation of imbibed dormant seeds at 30°C induces a thermodormancy which is expressed as germination in a narrower temperature range. Induction of thermodormancy is apparent after 3–8 hours at 30°C, is optimal after about 1–2 days at this temperature, but diminishes with longer treatment times. Although whole grains become more dormant as a result of such treatment, the embryos themselves become less dormant, therefore the tissues covering or adjacent to the embryos must have become more inhibiting or the embryos have become more sensitive to their inhibitory action. The germination and sensitivity to ABA or oxygen of embryos isolated from such seeds are no longer so dependent on temperature. The effect of high temperature on primary dormancy and induction of thermodormancy is discussed with reference to sensitivity to ABA and temperature.

Keywords

GerminationthermodormancyAvena sativatemperature dependencyabscisic acid sensitivity

Information

Type
Research Papers
Information
Seed Science Research , Volume 3 , Issue 2 , June 1993 , pp. 111 - 117
Copyright
Copyright © Cambridge University Press 1993

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.)

Article purchase

Temporarily unavailable

Footnotes

1

Permanent address: Division of Life Sciences, King's College London, Campden Hill Road, London W8 7AH, UK.

References

Bewley, J.D. and Black, M. (1982) Physiology and Biochemistry of Seeds in Relation to Germination. Vol 2, Viability, Dormancy and Environmental Control, Berlin, Springer Verlag.Google Scholar
Black, M., Butler, J. and Hughes, M. (1987) Control and development of dormancy in cereals. pp 379–392 in Mares, D.J. (Ed.) Fourth International Symposium on Preharvest Sprouting in Cereals. Boulder, Colorado, Westview Press.Google Scholar
Côme, D. and Tissaoui, T. (1968) Induction d'une dormance embryonnaire secondaire chez le pommier (Pirus malus L) par des atmosphères très appauvries en oxygène. Comptes Rendus de l'Académie des Sciences Paris 266, série D, 444–479.Google Scholar
Côme, D., Lenoir, C. and Corbineau, F. (1984) La dormance des céréales et son élimination. Seed Science and Technology 16, 175–186.Google Scholar
Corbineau, F., Lecat, S. and Côme, D. (1986) Dormancy of three cultivars of oat seeds (Avena sativa L.). Seed Science and Technology 14, 725–735.Google Scholar
Corbineau, F., Poljakoff-Mayber, A. and Côme, D. (1991) Responsiveness to abscisic acid of embryos of dormant oat (Avena sativa) seeds. Involvement of ABA-inducible proteins. Physiologia Plantarum 83, 1–6.CrossRefGoogle Scholar
Gosling, P.G., Butler, R.A., Black, M. and Chapman, J. (1981) The onset of germination ability in developing wheat. Journal of Experimental Botany 32, 621–627.CrossRefGoogle Scholar
Karssen, C.M. (1980/1981) Environmental conditions and endogenous mechanisms involved in secondary dormancy of seeds. Israel Journal of Botany 29, 59–64.Google Scholar
Khan, A.A. and Karssen, C.M. (1980) Induction of secondary dormancy in Chenopodium bonus-henricus L. seeds by osmotic and high temperature treatments and its prevention by light and growth regulators. Plant Physiology 66, 175–181.CrossRefGoogle ScholarPubMed
Kristie, D.N., Bassi, P.K. and Spencer, M.S. (1981) Factors affecting the induction of secondary dormancy in lettuce. Plant Physiology 67, 1224–1229.CrossRefGoogle ScholarPubMed
Lenoir, C., Corbineau, F. and Côme, D. (1983) Rôle des glumelles dans la dormance des semences d'orge. Physiologie Végétale 21, 633–643.Google Scholar
Lenoir, C., Corbineau, F. and Côme, D. (1986) Barley (Hordeum vulgare L.) seed dormancy as related to glumella characteristics. Physiologia Plantarum 68, 301–307.CrossRefGoogle Scholar
Morris, F., Moffatt, J.M., Sears, R.G. and Paulsen, G.M. (1989) Seed dormancy and responses of caryopses, embryos and calli to abscisic acid in wheat. Plant Physiology 90, 643–647.CrossRefGoogle ScholarPubMed
Naylor, J.M. and Simpson, G.M. (1961) Dormancy studies in seeds of Avena fatua. 2. A gibberellin-sensitive inhibitory mechanism in the embryo. Canadian Journal of Botany 39, 281–295.CrossRefGoogle Scholar
Reynolds, T. and Thompson, P.A. (1971) Characterization of the high temperature inhibition of germination of lettuce. Physiologia Plantarum 24, 544–547.CrossRefGoogle Scholar
Roberts, E.H. and Smith, R.D. (1977) Dormancy and the pentose phosphate pathway. pp 385–411 in Khan, A.A. (Ed.) The Physiology and Biochemistry of Seed Dormancy and Germination. Amsterdam, Elsevier, Biomedical Press.Google Scholar
Sawhney, R., Hsaio, A.I. and Quick, W.A. (1984) Temperature control of germination and its possible role in the survival of a non-dormant population of Avena fatua. Physiologia Plantarum 61, 331–336.CrossRefGoogle Scholar
Simpson, G.M. (1991) Seed dormancy in grasses. Cambridge, Cambridge University Press.Google Scholar
Symons, S.J., Naylor, J.M., Simpson, G.M. and Adkins, S.W. (1986) Secondary dormancy in Avena fatua: Induction and characteristics in genetically pure dormant lines. Physiologia Plantarum 68, 27–33.CrossRefGoogle Scholar
Symons, S.J., Simpson, G.H. and Adkins, S.W. (1987) Secondary dormancy in Avena fatua: Effect of temperature and after-ripening. Physiologia Plantarum 70, 419–426.CrossRefGoogle Scholar
Walker-Simmons, M. (1987) ABA levels and sensitivity in developing wheat embryos of sprouting resistant and susceptible cultivars. Plant Physiology 84, 61–66.CrossRefGoogle ScholarPubMed