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Seed behaviour in Phoenix reclinata Jacquin, the wild date palm

Published online by Cambridge University Press:  22 February 2007

Gundula T. von Fintel ,
Patricia Berjak  and
N.W. Pammenter
Gundula T. von Fintel
Affiliation:
School of Biological and Conservation Sciences, University of KwaZulu-Natal§Durban, 4041, South Africa
Patricia Berjak*
Affiliation:
School of Biological and Conservation Sciences, University of KwaZulu-Natal§Durban, 4041, South Africa
N.W. Pammenter
Affiliation:
School of Biological and Conservation Sciences, University of KwaZulu-Natal§Durban, 4041, South Africa
*
*Correspondence Email: [email protected]
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Abstract

Despite the importance of the palm family, Arecaceae, little has been systematically documented about the seed behaviour of the many species. The post-harvest seed behaviour of Phoenix reclinata, the highly utilized wild date palm species distributed along the eastern seaboard of Africa, is investigated in the present study. While both embryo and endosperm water concentration declined as the seeds of Phoenix reclinata matured, they remained relatively high: this is a characteristic of (but not confined to) non-orthodox seeds. The ultrastructure of embryo cells, and the finding that negligible water uptake was required for the initiation of germination, were in keeping with the possible non-orthodox nature of the seeds. A developmental study revealed that between the acquisition of full germinability and complete pre-shedding maturity, germination performance appeared to be constrained, suggesting the presence of an inhibitor. Pre-treatment by soaking, mechanical or acid scarification had no significant promotory effect on either rate or totality of germination of mature P. reclinata seeds, while use of water transiently at 100°C was highly deleterious. However, germination of partially dehydrated seeds was initiated sooner if they had been soaked or scarified. Mature P. reclinata seeds tolerated dehydration to a mean embryo water concentration of 0.40 g g–1 (dry mass basis; dmb), but at 0.14 g g–1, both rate and totality of germination were adversely affected. However, viability of seeds dehydrated to the mean embryo water concentration 0.40 g g–1 declined during storage for 16 weeks. It is concluded that P. reclinata seeds are non-orthodox, and are best categorized as showing intermediate post-harvest behaviour.

Keywords

ArecaceaeintermediateorthodoxpalmPhoenix reclinatapost-harvest behaviourrecalcitrant seeds
Type
Research Article
Information
Seed Science Research , Volume 14 , Issue 2 , May 2004 , pp. 197 - 204
Copyright
Copyright © Cambridge University Press 2004

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References

Anguelova-Merhar, V. S., Calistru, C. and Berjak, P. (2003) A study of some biochemical and histopathological responses of wet-stored recalcitrant seeds of Avicennia marina infected by Fusarium moniliforme. Annals of Botany 92, 1–8.CrossRefGoogle ScholarPubMed
Berjak, P. (1996) The röle of micro-organisms in deterioration during storage of recalcitrant and intermediate seeds. pp. 121–126in Poulsen, K., Stubsgaard, F., Ouédraogo, A.S. (Eds) Improved methods for the handling and storage of intermediate/recalcitrant forest tree seeds. Rome, International Plant Genetic Resources Institute.Google Scholar
Broschat, T.K. (1994) Palm seed propagation. Acta Horticulturae 360, 141–147.CrossRefGoogle Scholar
Broschat, T.K. and Donselman, H. (1986) Factors affecting the storage and germination of Chrysalidocarpus lutescens seeds. Journal of the American Society for Horticultural Science 111, 872–877.CrossRefGoogle Scholar
Broschat, T.K. and Donselman, H. (1987) Effects of fruit maturity, storage, presoaking, and seed cleaning on germination in three species of palms. Journal of Environmental Horticulture 5, 6–9.CrossRefGoogle Scholar
Carpenter, W.J., Ostmark, E.R. and Ruppert, K.C. (1994) Promoting the germination of needle palm seed. Proceedings of the Florida State Horticultural Society 106, 336–338.Google Scholar
Davies, R.I. and Pritchard, H.W. (1998a) Seed conservation of dryland palms of Africa and Madagascar: needs and prospects. Forest Genetic Resources 26, 37–44.Google Scholar
Davies, R.I. and Pritchard, H.W. (1998b) Seed storage and germination of the palms Hyphaene thebaica, H. petersiana and Medemia argun. Seed Science and Technology 26, 823–828.Google Scholar
Donselman, H. (1982) Palm seed germination studies. Proceedings of the Florida State Horticultural Society 95, 256–257.Google Scholar
Doughty, S.C., O'Rourke, E.N., Barrios, E.P. and Mowers, R.P. (1986) Germination induction of pygmy date palm seed. Principes 30, 85–87.Google Scholar
Ehara, H., Morita, O., Komada, C. and Goto, M. (2001) Effect of physical treatment and presence of the pericarp and sarcotesta on seed germination in sago palm. Seed Science and Technology 29, 83–90.Google Scholar
Hong, T.D. and Ellis, R.H. (1996) A protocol to determine seed storage behaviour. IPGRI Technical Bulletin No. 1. Rome, International Plant Genetic Resources Institute.Google Scholar
IPGRI/DFSC (1999) Desiccation and storage protocol. pp. 23–39in The project on handling and storage of recalcitrant and intermediate tropical forest seeds, Newsletter No. 5. Rome, IPGRI/DFSC.Google Scholar
Klein, S. and Pollock, B.M. (1968) Cell fine structure of developing lima bean seeds related to seed desiccation. American Journal of Botany 55, 658–672.CrossRefGoogle Scholar
Loomis, H.F. (1958) The preparation and germination of palm seeds. Principes 2, 98–102.Google Scholar
Maciel, N. (2001) Emergence of royal palm seedlings (Roystonea oleraceae [Jacq.] O.F. Cook) as affected by fruit and seed treatments. Bioagro 13, 105–110.Google Scholar
Maciel, de and Sousa, N. (1995) Effects of maturity, storage and fermentation of the fruit on emergence in areca palm (Chrysalidocarpus lutescens). Proceedings of the Interamerican Society for Tropical Horticulture 39, 69–73.Google Scholar
Maunder, M., Lyte, B., Dransfield, J. and Baker, W. (2001) The conservation value of botanic garden palm collections. Biological Conservation 98, 259–271.CrossRefGoogle Scholar
Mbuya, L.P., Msanga, H.P., Ruffo, C.K., Birnie, A. Tengnäs B. (1994) Useful trees and shrubs for Tanzania. Nairobi, Kenya, SIDA Regional Soil Conservation Unit.Google Scholar
Meerow, A.W. (1991) Palm seed germination. Institute of Food and Agricultural Sciences, University of Florida Cooperative Extension Service Bulletin 274. Gainesville University of Florida.Google Scholar
Moussa, H., Margolis, H.A., Dube, P.A. and Odongo, J. (1998) Factors affecting the germination of doum palm (Hyphaene thebatica Mart.) seeds from the semi-arid zone of Niger, West Africa. Forest Ecology and Management 104, 27–41.CrossRefGoogle Scholar
Nagao, M.A. and Sakai, W.S. (1979) Effect of growth regulators on seed germination of Archontophoenix alexandrae. HortScience 14, 182–183.CrossRefGoogle Scholar
Nagao, M.A., Kanegawa, K. and Sakai, W.S. (1980) Accelerating palm seed germination with gibberellic acid and bottom heat. HortScience 15, 200–201.CrossRefGoogle Scholar
Odetola, J.A. (1987) Studies on seed dormancy, viability and germination in ornamental palms. Principes 31, 24–30.Google Scholar
Pammenter, N.W. and Berjak, P. (1999) A review of recalcitrant seed physiology in relation to desiccation-tolerance mechanisms. Seed Science Research 9, 13–37.CrossRefGoogle Scholar
Pooley, E. (1993) The complete guide to trees of Natal, Zululand and Transkei. Durban, South Africa, Natal Flora Publications Trust.Google Scholar
Rauch, F.D. (1994) Palm seed germination. International Plant Propagators' Society: Combined Proceedings 44, 304–307.Google Scholar
Rauch, F.D., Schmidt, L. and Murakami, P.K. (1982) Seed propagation of palms. International Plant Propagators' Society: Combined Proceedings 32, 341–347.Google Scholar
Silva, M.A.S., Castellani, E.D. Demattê M.E.S.P. (1999) Effect of fruit maturation stage and light on seed germination of Aiphanes aculeata. Acta Horticulturae 486, 229–231.CrossRefGoogle Scholar
Smith, F.D.M., May, R.M., Pellew, R., Johnson, T.H. and Walter, K.S. (1993) Estimating extinction rates. Nature 364, 494–496.CrossRefGoogle Scholar
Sokal, R.R. and Rohlf, F.J. (1981) Biometry. The principles and practice of statistics in biological research. San Francisco, W.H. Freeman and Company.Google Scholar
Tuley, P. (1995) The palms of Africa. Cornwall, Trendrine Press.Google Scholar
Tweddle, J.C., Turner, R.M. and Dickie, J.B. (2003) Seed information database (release 5.0, July 2003). Available at http://www.rbgkew.org.uk/data/sid.Google Scholar
Uhl, N.W. and Dransfield, J. (1987) Genera Palmarum: A classification of palms based on the work of Harold E. Moore Jr. Lawrence, Kansas Allen Press.Google Scholar
Wicht, H. (1969) The indigenous palms of southern Africa. Cape Town, Howard Timmins.Google Scholar