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Reimposition of conditional dormancy during air-dry storage of prechilled Sitka spruce seeds

Published online by Cambridge University Press:  19 September 2008

Steve K. Jones ,
Peter G. Gosling  and
Richard H. Ellis
Steve K. Jones*
Affiliation:
Forest Research Station, Alice Holt Lodge, Wrecclesham, Farnham, Surrey, GU10 4LH, UK
Peter G. Gosling
Affiliation:
Forest Research Station, Alice Holt Lodge, Wrecclesham, Farnham, Surrey, GU10 4LH, UK
Richard H. Ellis
Affiliation:
Department of Agriculture, The University of Reading, Earley Gate, PO Box 236, Reading, RG6 6AT, UK
*
*Correspondence
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Abstract

Prechilling seeds of Sitka spruce (Picea sitchensis [Bong.] Carr.) at 4°C with 30% moisture content for 12–14 weeks (84–98 d) removed conditional dormancy (i.e. they were then able to germinate at 10°C). The non-dormant status was preserved after redrying to 6% moisture content. However, conditional dormancy was gradually reimposed during subsequent air-dry storage at 4°C and 6% seed moisture content in all five seed lots tested. Further investigations with one seed lot showed that reimposition was reversed by a second prechill treatment, but was reimposed again during subsequent air-dry storage. The trend of dormancy reimposition within seed lots over time was quantified by negative exponential relations between ability to germinate at 10°C and duration of air-dry storage. The progress of dormancy reimposition was influenced by seed storage moisture content and was most rapid at 4–10%. At higher moisture contents (15 and 20%) the rate of the reimposition of conditional dormancy was much reduced, while at moisture contents of 25 and 30% further loss in dormancy occurred. Thus it is clear that dormancy reimposition occurred during storage at low water potential rather than solely during desiccation from high to low water potential.

Keywords

conditional dormancyconifer seedseed storagePicea sitchensisSitka spruce
Type
Research Papers
Information
Seed Science Research , Volume 8 , Issue 2 , June 1998 , pp. 113 - 122
Copyright
Copyright © Cambridge University Press 1998

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References

Allen, G S (1962a) Factors affecting the viability and germination behaviour of coniferous seed. V. Seed moisture content during stratification and secondary storage, Pseudotsuga menziesii (Mirb.) Franco. Forestry Chronicle 38, 303–312.CrossRefGoogle Scholar
Allen, G S (1962b) Factors affecting the viability and germination behaviour of coniferous seed. VI. Stratification and subsequent treatment, Pseudotsuga menziesii (Mirb.) Franco. Forestry Chronicle 38, 485–496.CrossRefGoogle Scholar
Barnett, J P (1972) Drying and storing stratified loblolly pine seeds reinduces dormancy. Tree Planters' Notes 23, 10–11.Google Scholar
Bewley, J D and Black, M (1982) Physiology and biochemistry of seeds in relation to germination: 2. Viability, dormancy and environmental control. New York, Springer-Verlag.CrossRefGoogle Scholar
Bianchetti, A (1986) Effects of moisture content, temperature, and storage intervals on secondary dormancy of seed of loblolly pine (Pinus taeda L.). PhD Thesis, Mississippi State University, Starkville, USA.Google Scholar
Foley, M E (1994) Temperature and water status of seed affect after-ripening in wild oat (Avena fatua). Weed Science 42, 200–204.CrossRefGoogle Scholar
Gordon, A G (1992) Cone and seed collection and handling before processing, pp 80–85. The processing of cones and seeds, pp 86–97. Seed storage, pp 98–104. Seed dormancy, seed treatment and seed sowing, pp 116–121 in Gordon, A G (Ed.) Seed manual for forest trees. Forestry Commission Bulletin 83. London, HMSO.Google Scholar
Gosling, P G and Aldhous, J R (1994) Seed, pp 66–83in Aldhous, J R, Mason, W L (Eds) Forest nursery practice. Forestry Commission Bulletin 111. London, HMSO.Google Scholar
Gosling, P G and Peace, A (1990) The analysis and interpretation of ISTA ‘double’ germination tests. Seed Science and Technology 18, 791–803.Google Scholar
Gosling, P G and Rigg, P (1990) The effect of moisture content and prechill duration on the efficiency of dormancy breakage in Sitka spruce (Picea sitchensis) seed. Seed Science and Technology 18, 337–343.Google Scholar
Hong, T D, Linington, S and Ellis, R H (1996) Seed storage behaviour: A compendium. Rome, International Plant Genetic Resources Institute.Google Scholar
ISTA (1996) International rules for seed testing. Rules 1996, Annexes 1996. Seed Science and Technology 24, Supplement.Google Scholar
Jones, S K and Gosling, P G (1990) The successful redrying of imbibed plus prechilled Sitka spruce seed. Seed Science and Technology 18, 541–547.Google Scholar
Jones, S K and Gosling, P G (1994) ‘Target moisture content’ prechill overcomes the dormancy of temperate conifer seeds. New Forests 8, 309–321.CrossRefGoogle Scholar
Jones, S K, Gosling, P G and Ellis, R H (1993) The effects of redrying moist, prechilled, and chitted Sitka spruce (Picea sitchensis Bong. Carr.) seeds. pp 1015–1020, Volume 3 in Côme, D, Corbineau, F (Eds) Proceedings of Fourth International Workshop on Seeds. Basic and applied aspects of seed biology. Angers, France, 20–24 July 1992.Google Scholar
Kauppinen, J, Leinonen, K, Nygren, M and Vanhatalo, V (1996) Regulation of Scots pine and Norway spruce seed dormancy by red and far-red light at various moisture contents. Abstracted in IUFRO Seed Physiology and Genetics Newsletter No. 49, 8–9.Google Scholar
Leopold, A C and Vertucci, C W (1989) Moisture as a regulator of physiological reaction in seeds. pp 51–67in Stanwood, P C, McDonald, M B (Eds.) Seed moisture, CSSA Special Publication No. 14. Madison, Wisconsin, USA, Crop Science Society of America.Google Scholar
Leopold, A C, Glenister, R and Cohn, M A (1988) Relationship between water content and after-ripening in red-rice. Physiologia Plantarum 74, 659–662.CrossRefGoogle Scholar
Roberts, E H (1962) Dormancy in rice seed. III. The influence of temperature, moisture, and gaseous environment. Journal of Experimental Botany 13, 75–94.CrossRefGoogle Scholar
Roberts, E H and Ellis, R H (1989) Water and seed survival. Annals of Botany 63, 39–52.CrossRefGoogle Scholar
Simpson, G M (1990) Seed dormancy in grasses. Cambridge, UK, Cambridge University Press.CrossRefGoogle Scholar
Vertucci, C W and Leopold, A C (1984) Bound water in soybean seed and its relation to respiration and imbibitional damage. Plant Physiology 75, 114–117.CrossRefGoogle ScholarPubMed
Vertucci, C W and Leopold, A C (1986) Physiological activities associated with hydration level in seeds. pp 35–49in Leopold, A C (Ed.) Membranes, metabolism and dry organisms. New York, USA, Comstock Publishing Associates, Cornell University Press.Google Scholar
Wang, B S P, Charest, P J and Downie, B (1994) Ex situ storage of seeds, pollen and in vitro cultures of perennial woody plant species. FAO Forestry Paper 113, Rome, Food and Agriculture Organisation of the United Nations.Google Scholar
Wang, B S P and Downie, B (1996) Priming and invigoration of tree seeds. pp 268–283in Olesen, K (Ed.) ‘Innovations in tropical seed technology’ Proceedings of the IUFRO Symposium of the Project Group P.2.04.00 ‘Seed Problems’, Arusha, Tanzania. Denmark, Tjep tryk.Google Scholar