Folia Geobotanica et Phytotaxonomica

, Volume 24, Issue 1, pp 37–49 | Cite as

Dispersion, germination and growth of seedlings ofSagittaria lancifolia L.

  • E. Gordon Collon
  • J. Velasquez


Sagittaria lancifolia L. a perennial helophyte growing in shallow waters has asexual reproduction by rhizomes and sexual reproduction by achenes. We studied the morphological characteristics of achenes related to its dispersion, some factors affecting its germination and the development stages and growth of seedlings. This species produces many achenes, and disperses through epizoochory and hydrochory. Achenes germinate on light only. 100% germination was obtained at 25°C. Under conditions of inundation the germination period decreases, and the percentage of germination in creases when compared to achenes with or without imbibition. Achenes in anaerobic conditions have reduced germination.

The growth of seedlings ofS. lancifolia was affected by the temperature: each organ of the seedlings grows differently in dependence upon this factor. For example, roots grow faster during the early stages of the seedlings.


Sagittaria lancifolia L. Dispersion Germination Seedling Achene 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature Cited

  1. Bewley J. B. etBlack M. (1982): Physiology and biochemistry of seeds. Vol. II. Viability, dormancy and environmental control.—Berlin, New York.Google Scholar
  2. Billings W. D., Golley F., Lance O. L. etOlson J. S. (1979): Methods of studying roots systems. —New York, Berlin.Google Scholar
  3. Bidwell R. G. S. (1979): Plant physiology—New York.Google Scholar
  4. Cole N. H. A. (1977): Effect of light, temperature, and flooding on seed germination of NeotropicalPanicum laxum S. W.—Biotropica, 9/3: 191–194.CrossRefGoogle Scholar
  5. Fahn A. etWerker E. (1972): Anatomical mechanism of seed dispersal. In:Kozlowski T. T. (ed.), Seed biology, Vol. I.—London, New York.Google Scholar
  6. Fitter A. H. etHay R. K. M. (1981): Environemental physiology plants.—London, New York.Google Scholar
  7. Gopal B. etSharma K. P. (1983): Light regulated seed germination inTypha angustata Bory etChaub.—Aquatic. Bot., 16: 377–384.CrossRefGoogle Scholar
  8. Harper J. L. (1977): Population biology of plants.—London, New York.Google Scholar
  9. Hutchinson E. G. (1975): A treatise on limnological. Vol. III.—New York.Google Scholar
  10. Kaul R. B. (1978): Morphology of germination and establishment of aquatic seedlingsAlimastaceae andHydrocharitaceae.—Aquatic Bot., 5: 139–147.CrossRefGoogle Scholar
  11. Kordan H. A. (1972): Rice seedlings germinated in water with normal and impeded environmental gas exchange.—J. Appl. Ecol., 9: 572–533.Google Scholar
  12. Kozlowski T. T. etGunn C. R. (1972): Importance and characteristics of seeds.—In:Kozlowski T. T. [ed.], Seed. Biology Vol. I.—London.Google Scholar
  13. Lejoly J. etMandango A. (1982): L'association arbustive ripicole A'Alchornea cordifolia dans le hant—Zaire.—In:Symoens J. J., Hooper S. S. etCompere P. [ed.] Studies on aquatic vascular plants.—Royal Botanical Society of Belgium, Brussels.Google Scholar
  14. Levitt J. (1972): Response of plants to environmental stresses.—Oxford.Google Scholar
  15. Mayer A. M. etPoljakoff-Mayber A. (1975): Germination of seeds.—Oxford.Google Scholar
  16. Obeid M. etTag el Seed M. (1976): Factors affecting dormancy and germination of seeds ofEichhornia crassipes (Mart.)Soms. from the Nile.—Weed Research, 16(2): 71–80.CrossRefGoogle Scholar
  17. Smith L. M. etKadlec J. A. (1983): Seed banks and their role during drawdown American Marsh.—J. Appl. Ecol., 20: 673–684.CrossRefGoogle Scholar
  18. Stebbins G. L. (1977): Flowering plants.—Massachusetts.Google Scholar
  19. Stearn W. T. (1966): Botanical Latin.—New York.Google Scholar
  20. Thompson K. etGrime J. F. (1983): A comparative study of germination response to diurnally fluctuating temperatures.—J. Appl. Ecol., 20/1: 141–156.CrossRefGoogle Scholar
  21. Trowght M. G. etDrew M. C. (1982): Effects of waterlogging on young wheat plants (Triticum aestivum L.) and soil solutes at different soil temperatures.—Plant and Soil, 69: 311–326.CrossRefGoogle Scholar
  22. Velasquez J. (1987): Plantas acuáticas vasculares de Venezuela.—Trabajo de Ascenso. Esc. de Biología, Fac. Ciencias, U.C.V. Caracas.Google Scholar
  23. Wikander T. (1970): Germinación y crecimiento radicular deWigandia caracasana.—T.E.G., Esc. de Biológia, Fac. de Ciencias, U.C.V. Caracas.Google Scholar

Copyright information

© Academia 1989

Authors and Affiliations

  • E. Gordon Collon
    • 1
  • J. Velasquez
    • 1
  1. 1.Escuela de Biología, Depto. de Ecología, Facultad de CienciasU.C.V.CaracasVenezuela

Personalised recommendations