Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-22T21:15:37.377Z Has data issue: false hasContentIssue false
  • English
  • Français

Seed Dormancy of Nodding Beggarticks (Bidens cernua L.)

Published online by Cambridge University Press:  12 June 2017

E. J. Hogue
Get access Rights & Permissions [Opens in a new window]

Abstract

For prompt germination, the achenes of the nodding beggarticks (Bidens cernua L.) required 6 to 12 weeks of afterripening at 2 C and exposure to light. Without cold afterripening, a slow but complete germination was obtained after 2 weeks when the achene and seed inside, or the seed excised from the achene, were clipped at the distal end and germinated in light at 24 C. The embryo behaved like a clipped seed. Complete germination within 7 days, in light or dark, of the clipped seed was obtained by treating with gibberellic acid (GA) or N-6-benzyladenine (BA). The barriers to germination in the non-after-ripened seed appear to be first in the achene, the coverings of the seed itself and in a metabolic factor.

Type
Research Article
Information
Weed Science , Volume 24 , Issue 4 , July 1976 , pp. 375 - 378
Copyright
Copyright © 1976 by the Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Amen, R.D. 1968. A model of seed dormancy. Bot. Rev. 34: 1–31.Google Scholar
2. Andersen, R.N. 1968. Germination and Establishment of Weeds for Experimental Purposes. Weed Sci. Soc. Amer. Handbook. Urbana, I11. 236 pp.Google Scholar
3. Fawcett, H.S. 1908. The viability of weed seeds under different conditions of treatment, and a study of their dormant periods. Iowa Acad. Sci. Proc. 15: 24–45, as cited from Andersen (1), page 29.Google Scholar
4. Hartmann, H.T. and Kester, D.E. 1968. Plant Propagation: Principles and Practices. Prentice-Hall Inc., Englewood Cliffe, New Jersey. 702 pp.Google Scholar
5. Hocombe, S.D. 1961. Simple Experiments on the Greenhouse Germination of Some East African Weed Species. Colonial Pesticides Res. Unit (Arusha, Tanganykia) Misc. Rep. 285, 8 pp. as cited from Andersen (1), page 29.Google Scholar
6. Koller, D., Mayer, A.M., Poljakoff-Mayber, A., and Klein, S. 1962. Seed germination. Ann. Rev. Plant Physiol. 13: 437–464.Google Scholar
7. Maquire, J.D. and Overland, A. 1959. Laboratory germination of seeds of weedy and native plants. Washington Agr. Exp. Sta. Circ. 349, 15 pp. as cited from Andersen (1), pages 29 and 30.Google Scholar
8. Marie-Victorin, F. 1964. Flore Laurentienne. Les Presses de l'Université de Montréal, Montréal. 925 pp.Google Scholar
9. Mes, M.G. 1956. Germination of weed seeds. Plant Physiol. Res. Inst. (Univ. Pretoria, South Afr.) 1955–1956 Ann. Rep. pp. 8–10 as cited from Andersen (1), page 29.Google Scholar
10. Valio, I.F.M., Kirszenzaft, S.L. and Rocha, R.F. 1972. Germination of achenes of Bidens pilosa L. I. Effect of light of different wavelengths. New Phytol. 71: 677–682.Google Scholar