Journal of
Horticulture and Forestry

  • Abbreviation: J. Hortic. For.
  • Language: English
  • ISSN: 2006-9782
  • DOI: 10.5897/JHF
  • Start Year: 2009
  • Published Articles: 257

Full Length Research Paper

Effects of three pre-treatment techniques on dormancy and germination of seeds of Afzelia africana

Amusa, T. O.
Federal College of Wildlife Management, Forestry Research Institute of Nigeria, P. M. B. 268, New Bussa , Niger State, Nigeria.
Email: [email protected]

  • Article Number - 65E241D1204
  • Vol.3(4), pp. 96-103, April 2011
  •  Accepted: 10 February 2010
  •  Published: 30 April 2011

Abstract

The study assessed the effects of three pre-treatment techniques on dormancy and germination of seeds of Afzelia africana (Sm. ex Pers), an endangered tree species in Savanna ecozone of Nigeria. The three pre-treatment techniques are: soaking in cold water for 1, 12 and 24 h, soaking in hot water (100C) for 1, 12 and 24 h and soaking in 10, 50 and 98% concentrated sulphuric acid (H2SO4) for 5, 10 and 30 min. Experiments were performed based on a completely randomized design with four replicate.  The results show that cold water pre-treatment of A. africana seeds only gave a fair germination percentage (33.33 to 53.33%) and reduced dormancy period. On the other hand, the effect of hot water pre-treatment on the seeds gave adverse result (26.67 to 36.67%). Although A. africana seeds under control treatment gave an impressive germination, which did not differ significantly from the results of other pre-treatment techniques (F-cal = 2.6777; P-level = 0.1180; P < 0.05), acid pre-treatments yield a more uniform and regular germination. Thus, while the seeds of A, africana could be germinated without pre-treatment, to attain higher percentage germination and reduced dormancy period, the seeds should be pre-treated with sulphuric acid.

 

Key words: Dormancy, pre-treatment techniques, germination percentage, Afzelia africanaex situ conservation.

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