Summary
Plants of Portulaca oleracea L. were grown in a temperature controlled greenhouse. In one experiment plants received 8 hrs of daylight and during the following 16 hrs (“dark period”) they either were grown in darkness or received white, red and far red light of low intensity for various times preceeding the dark period or in the middle or the end of the dark period. In other experiments the plants were grown in photoperiods of 8, 11, 13, 15, 16 hrs and in continuous light. The effect of these treatments on number of leaves until the appearance of the first flower bud and the germination of the seeds collected from these plants were studied. P. oleracea was found to be a photoperiodic facultative or quantitative short day plant. The photoperiodic treatments of the mother plants affect the germinability of their seeds, dependent on the last 8 days of seed maturation on the mother plants. The shorter the daylength the faster the germination. Red or far-red treatments of the mother plant also affect the germinability. But in no case is there dark germination even after 8 days of seed maturation under continuous red light. These results suggest that the influence of the light treatments of the mother plants on the germination of its seeds is not mediated via phytochrome but rather through some other pathway.
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References
Abrams, G. J. von, Hand, M. E.: Seed dormaucy in Rosa as a function of climate. Amer. J. J. Bot. 43, 7–12 (1956)
Black, M., Naylor, J. M.: Prevention of the onset of seed dormancy by gibberellic acid. Nature (Lond.) 184, 468–469 (1959)
Datta, S. C., Evenari, M., Gutterman, Y.: The heteroblasty of Aegilops ovata L. Israel J. Bot. 19, 463–483 (1970)
Datta, S. C., Gutterman, Y., Evenari, M.: The influence of the origin of the mother plant on yield and germination of their caryopses in Aegilops ovata. Planta (Berl.) 105, 155–164 (1972)
Evenari, M.: Zur Keimungsökologie zweier Wüstenpflanzen. Mitteilungen der floristischsoziologischen Arbeitsgemeinschaft N.F., Vol. 10. Festschrift für Prof. Otto Stocker, Stolzenau/Weser, S. 70–81 (1963)
Evenari, M., Koller, D., Gutterman, Y.: Effects of the environment of the mother plant on the germination by control of seed-coat permeability to water in Ononis sicula Guss. Aust. J. biol. Sci. 19, 1007–1016 (1966)
Grant Lipp, A. E., Ballard, L. A. T.: The interrelation of dormancy, size and hardness in seeds of Trifolium subterraneum L. Aust. J. agric. Res. 15, 215–222 (1964)
Gutterman, Y.: The photoperiodic response of some plants and the effect of the environment of the mother plant on the germination of their seeds [Hebrew with English summary]. Ph.D. thesis, Hebrew University of Jerusalem (1969)
Gutterman, Y.: Differences in the progeny due to day length and hormonal treatment of the mother plant. Seed ecology. Nottingham Univ., 19th Easter School. W. Heydecker, ed., p. 59–80 (1972)
Gutterman, Y., Evenari, M.: The influence of day length on seed coat colour, an index of water permeability, of the desert annual Ononis sicula Guss. J. Ecol. 60, 713–719 (1972)
Gutterman, Y., Heydecker, W.: Studies of the surfaces of desert plant seed. I. Effect of day length upon maturation of the seedcoat of Ononis sicula. Guss. Ann. Bot. 37, 1049–1050 (1973)
Gutterman, Y., Porath, D.: Phytochrome and germination of Cucumis prophetarum L. and Cucumis sativus L. seeds, influenced by fruit storage under different light conditions. Israel J. Bot. 22, 200 (1973)
Gutterman, Y., Porath, D.: Influences of photoperiodism and light treatments durign fruit storage, on the phytochrome and on the germination of Cucumis prophetarum L. and Cucumis sativus L. seeds. Unpublished
Gutterman, Y., Thomas, T. H., Heydecker, W.: Effect on the progeny of applying different day length and hormone treatments to parent plants of Lactuca scariola L. Unpublished
Harrington, J. F., Tompson, R. C.: Effect of variety and area of production on subsequent germination of lettuce seed at high temperatures. Proc. Amer. Soc. Hort. Sci. 59, 445–450 (1952)
Heslop-Harrison, J.: Photoperiodic effects on sexuality, breeding system, and seed germinability in Rottboellia exaltata. Proc. IXth Int. Bot. Congr. Montreal 2, 162–163 (1959)
Jackson, G. A. D.: Hormonal control of fruit development, seed dormancy and germination with particular reference to Rosa. In: Plant growth regulators. Soc. Chem. Ind. Monogr. 31, 127–156 (1968)
Jacques, R.: Quelques données sur le photopériodisms de Chenopodium polyspermum L. Infleunce sur la germination des graines. Publ. Un. Int. Sci. Biol. 34, 125–130 (1957) (Colloque International sur la Photothermoperiodism: Action des diverses radiations, des gibberellines, et de quelques autres substances)
Jacques, R.: Action de la lumière par l'intermédiaire du phytochrome sur la germination, la croissance et le developpement de Chenopodium polyspermum L. Physiol. Vég. 6, 137–164 (1968)
Junttila, O.: Effect of mother plant temperature on seed development and germination in Syringa reflexa Schneid. Meld. Norg. Landbr. Høgsk. 50, 1–16 (1971)
Karssen, C. M.: The light promoted germination of the seeds of Chenopodium album L. III. Effect of the photoperiod during growth and development of the plants on the dormancy of the produced seeds. Acta bot. Neerl. 19, 81–94 (1970)
Kidd, F., West, C.: Physiological predetermination: The influence of the physiological conditions of the seed upon the course of subsequent growth and upon the yield. II. Review of literature, chapt. I. Ann. appl. Biol. 5, 112–142 (1919)
Kodolenko, B. G.: Formation of the seeds of Axyris amaranthoides L. and Atriplex hortensis L. [in Russian]. Agrobiologia 7, 135–138 (1952)
Koller, D.: Preconditioning of germination in lettuce at time of fruit ripening. Amer. J. Bot. 49, 841–844 (1962)
Lang, A.: Physiology of flower induction. In: W. Ruhland, ed., Encyclopedia of plant physiology, vol. 15, No. 1, p. 1380–1536. Berlin-Heidelberg-New York: Springer 1965
Lona, F.: L'influenza della condizioni ambientali, durante l'embriogenesi, sulla caratteristiche della pianta che ne deriva. Publ. Inst. Bot. Univ. Milano, pp. 1–40 (1947)
McCullough, J. M., Shropshire, W., Jr.: Physiological predetermination of germination responses in Arabidopsis thaliana (L.) Heynh. Plant Cell Physiol. 11, 139–148 (1970)
Salisbury, F. B.: The flowering process. New York: Pergamon Press 1963
Singh, K. P.: Effect of temperature and light on seed germination of two ecotypes of Portulaca oleracea L. New Phytologist 72, 289–295 (1973)
Vince-Prue, D., Guttridge, C. G.: Floral initiation in strawberry: Spectral evidence for the regulation of flowering by long-day inhibition. Planta (Berl.) 110, 165–172 (1973)
Wentland, M. J.: The effect of photoperiod on the seed dormancy of Chenopodium album. Thesis, University of Wisconsin, USA (1965)
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Gutterman, Y. The influence of the photoperiodic regime and red-far red light treatments of Portulaca oleracea L. plants on the germinability of their seeds. Oecologia 17, 27–38 (1974). https://doi.org/10.1007/BF00345093
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DOI: https://doi.org/10.1007/BF00345093