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Seed treatments: phytotoxicity amelioration and tracer uptake

Published online by Cambridge University Press:  05 January 2012

A.G. Taylor  and
Y.A. Salanenka
A.G. Taylor*
Affiliation:
Department of Horticulture, NYSAES Cornell University, Geneva, NY 14456, USA
Y.A. Salanenka
Affiliation:
Department of Horticulture, NYSAES Cornell University, Geneva, NY 14456, USA
*
*Correspondence Email: agt1@cornell.edu
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Abstract

Seed treatments are used globally on a wide range of field, vegetable and ornamental seeds, for efficient early season control of insects and diseases. However, specific seed-treatment compounds may be phytotoxic and this phytotoxicity is most acute in laboratory germination tests. Several strategies have been developed to alleviate seed-treatment phytotoxicity that include spatial separation of the pesticide from the seed. This can be accomplished by the application of the active compounds at the end of pelleting or by using a two-pellet system, termed ‘smart-pill technology’. Another approach is to detoxify or adsorb the agrochemical in a standard germination test by applying a peat medium over the seeds in a roll towel or blotter test. Many new seed-treatment chemicals have systemic activity, and the efficacy of these systemic seed treatments depends on the ability of these applied chemical compounds to be absorbed, and then transported in the developing plant. The present article describes seed-coat permeability to systemic seed treatments, examined by monitoring the movement of fluorescent tracers into intact seeds during imbibition. Two moderately lipophilic, fluorescent tracers have been used – rhodamine (ionic) and coumarin (non-ionic) – which differ mainly in electrical charge. Seed-coat permeabilities of particular species have been grouped into three categories: (1) permeable to both tracers; (2) selectively permeable to only coumarin; and (3) non-permeable to both tracers. The ability of a particular compound to diffuse through the seed coat is related to the chemical nature of the seed-covering tissues and the physico-chemical properties of the compound applied.

Keywords

coumarinfilm coatrhodamineseed-coat permeabilityseed pelletsystemic

Information

Type
Review Article
Information
Seed Science Research , Volume 22 , Supplement S1: Seed Science in the 21st Century , February 2012 , pp. S86 - S90
Copyright
Copyright © Cambridge University Press 2012

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References

AOSA (2009) Rules for testing seeds. Ithaca, New York, Association of Official Seed Analists.Google Scholar
Beresniewicz, M.B., Taylor, A.G., Goffinet, M.C. and Koeller, W.D. (1995 a) Chemical nature of a semipermeable layer in seed coats of leek, onion, tomato and pepper. Seed Science and Technology 23, 135–145.Google Scholar
Beresniewicz, M.B., Taylor, A.G., Goffinet, M.C. and Terhune, B.T. (1995 b) Seed coat integrity in relation to amino acid leakage in onion and leek. Plant Varieties and Seeds 8, 87–96.Google Scholar
Briggs, G., Bromilow, R. and Evans, A. (1982) Relationships between lipophilicity and root uptake and translocation of non-ionized chemicals by barley. Pesticide Science 13, 495–504.CrossRefGoogle Scholar
Copeland, L.O. and McDonald, M.B. (2001) Principles of seed science and technology (4th edition). Dordrecht, Kluwer Academic Publishers.CrossRefGoogle Scholar
Edgington, L.V. and Peterson, C.A. (1977) Systemic fungicides: theory, uptake and translocation. pp. 51–89 in Siegel, M; Sisler, H.D. (Eds) Antifungal compounds, Vol. 2. New York, Marcel Dekker.Google Scholar
Halmer, P. (1999) Commercial seed treatment technology. pp. 257–286 in Black, M; Bewley, J.D. (Eds) Seed technology and its biological basis. Sheffield, Sheffield Academic Press.Google Scholar
Halmer, P., Bewley, J.D. and Thorpe, T.A. (1975) Enzyme to break down lettuce endosperm cell wall during gibberellin- and light-induced germination. Nature 258, 716–718.CrossRefGoogle Scholar
Hansen, J.R. and Buchholtz, K.P. (1952) Absorption of 2,4-D by corn and pea seeds. Agronomy Journal 44, 493–496.CrossRefGoogle Scholar
Hill, H.J. (1999) Recent developments in seed technology. Journal of New Seeds 1, 105–112.CrossRefGoogle Scholar
Kanampiu, F., Karaya, H., Burnet, M. and Gressel, J. (2009) Needs for and effectiveness of slow release herbicide seed treatment Striga control formulations for protection against early season crop phytotoxicity. Crop Protection 28, 845–853.CrossRefGoogle Scholar
Kuhar, T.P., Stivers-Young, L.J., Hoffmann, M.P. and Taylor, A.G. (2002) Control of corn flea beetle and Stewart's wilt in sweet corn with imidacloprid and thiamethoxam seed treatments. Crop Protection 21, 25–31.CrossRefGoogle Scholar
Rieder, G., Buchholtz, K.P. and Kust, C.A. (1970) Uptake of herbicides by soybean seed. Weed Science 18, 101–105.CrossRefGoogle Scholar
Russell, P.E. and Mussa, A.E.A. (1977) An evaluation of potential seed treatments to control Fusarium solani f.sp. phaseoli, the cause of foot and root rot of Phaseolus vulgaris. Journal of Agriculture Science 89, 235–238.CrossRefGoogle Scholar
Salanenka, Y.A., Goffinet, M.C. and Taylor, A.G. (2009) Structure and histochemistry of the micropylar and chalazal regions of the perisperm–endosperm envelope of cucumber seed associated with solute permeability and germination. Journal of the American Society for Horticultural Sciences 134, 479–487.CrossRefGoogle Scholar
Salanenka, Y.A. and Taylor, A.G. (2009) Uptake of model compounds by soybean, switchgrass and castor seeds applied as seed treatments. pp. 76–81 in Symposium Proceedings No. 83. Seed production and treatment in a changing environment. Alton, Hampshire, UK, British Crop Protection Council.Google Scholar
Salanenka, Y.A. and Taylor, A.G. (2011) Seedcoat permeability: uptake and post-germination transport of applied tracer compounds. HortScience 46, 622–626.CrossRefGoogle Scholar
Simpson, G.M. (1990) Seed dormancy in grasses. Cambridge, Cambridge University Press.CrossRefGoogle Scholar
Taylor, A.G. (2003) Seed treatments. pp. 1291–1298 in Thomas, B.D.; Murphy, J.; Murray, B.G. (Eds) Encyclopedia of applied plant sciences. Kidlington, Oxford, UK: Elsevier Academic Press.CrossRefGoogle Scholar
Taylor, A.G., Eckenrode, C.J. and Straub, R.W. (2001) Seed treatments for onions: challenges and progress. HortScience 36, 199–205.CrossRefGoogle Scholar
Tetteroo, F., Kofman, F. and Legro, B. (2009) Smart pellet technology for safe and accurate insecticide applications. pp. 43–49 in Symposium Proceedings No. 83. Seed production and treatment in a changing environment. Alton, Hampshire, UK, British Crop Protection Council.Google Scholar
Thapliyal, P.N. and Sinclair, J.B. (1970) Uptake of the three systemic fungicides by germinating soybean seed. Phytopathology 60, 1373–1375.CrossRefGoogle ScholarPubMed
Yim, K.O. and Bradford, K.J. (1998) Callose deposition is responsible for apoplastic semipermeability of the endosperm envelope of muskmelon seeds. Plant Physiology 118, 83–90.CrossRefGoogle ScholarPubMed