Abstract
The upper-temperature limit for germination of cv. Celebrity celery seeds incubated in darkness in laboratory tests was slightly raised following a seed soak with a mixture of the gibberellins A4 and A7 + ethephon (G + E) but more so by osmotic priming with polyethylene glycol (PEG). However, the best effects were obtained with a combination of growth regulator and priming treatments. Incorporation of growth regulators into the PEG was more effective than soaking seeds in G + E solutions either before or after osmotic priming. In glasshouse tests, seedling emergence was more rapid, percentage emergence was higher and seedling weight was greater from seeds treated with PEG either alone or in combination with G + E than from untreated seeds, water-soaked seeds or seeds given G + E soaks before or after PEG treatment.
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References
Biddington NL (1981) Thermodormancy and the prevention of desiccation injury in celery seeds. Ann appl Biol 98: 558–562
Biddington NL, Brocklehurst PA, Dearman AS & Dearman J (1982) The prevention of dehydration injury in celery seeds by polyethylene glucol, abscisic acid, dark and high temperature. Physiol Plant 55: 407–410
Gibbins BM (1979) Pre-sowing osmotic treatment of celery seeds (Apium graveolens L.) University of Nottingham: PhD thesis.
Gray D (1977) Temperature sensitive phases during the germination of lettuce (Lactuca sativa) seeds. Ann appl Biol 86: 77–86
Heydecker W & Coolbear P (1977) Seed treatments for improved performance-survey and attempted prognosis. Seed Sci & Technol 5: 353–425
Khan AA (1978) Incorporation of bioactive chemicals into seeds to alleviate environmental stress. Acta Hort 83: 225–234
Khan AA (1980) Hormonal regulation of primary and secondary seed dormancy. Israel J Bot 29: 207–224
Khan AA, Karssen CM, Leue EF & Roe CH (1979) Preconditioning of seeds to improve performance. In Scott TK, ed. Plant Growth Regulation and World Agriculture, pp. 395–413. New York: Plenum Press.
Khan AA, Tao KL, Knypl JS, Borkowska B & Powell LE (1978) Osmotic conditioning of vegetable seeds: physiological and biochemical changes. Acta Hort 83: 267–278.
Michel BE & Kaufmann MR (1973) The osmotic potential of polyethylene glycol. Plant Physiol 51: 914–916.
Orchard TJ (1977) Estimating the parameters of plant seedling emergence. Seed Sci & Technol 5: 61–69
Salter PJ & Darby RJ (1976) Synchronisation of germination of celery seeds. Ann appl Biol 84: 415–424
Thomas TH, Biddington NL & Palevitch D (1978a) The role of cytokinins in the phytochrome-mediated germination of dormant imbibed celery seeds. Photochem & Photobiol 27: 231–236
Thomas TH, Biddington NL & Palevitch D (1978b) Improving the performance of pelleted celery seeds with growth regulator treatments. Acta Hort 83: 235–243
Thomas TH, Palevitch D, Biddington NL & Austin RB (1975) Growth regulators and the phytochrome-mediated dormancy of celery seeds. Physiol Plant 35: 101–106
Thomas TH & Whitlock AJ (1980) Direct sowing the next step. The Grower: Field Vegetable Quarterly June 1980 pp. 41–44
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Brocklehurst, P.A., Rankin, W.E.F. & Thomas, T.H. Stimulation of celery seed germination and seedling growth with combined ethephon, gibberellin and polyethylene glycol seed treatments. Plant Growth Regul 1, 195–202 (1982). https://doi.org/10.1007/BF00036998
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DOI: https://doi.org/10.1007/BF00036998