African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5211

Full Length Research Paper

Allelopathic effects of Artemisia princeps and Launae sonchoids on rhizospheric fungi and wheat growth

  Abd El-Fattah, R. I., Abou-Zeid, A. M.* and Altalhi, A. D.
Department of Biology, Faculty of Science, Taif University, Kingdom of Saudi Arabia (K.S.A.), Saudi Arabia.
Email: [email protected]

  •  Accepted: 11 January 2011
  •  Published: 18 February 2011



The allelopathic effect of Artemisia princeps L. and Launae sonchoids L. from Taif Governorate, Saudi Arabia was measured in terms of germination rate and radicle length of a bread wheat variety ‘Ariana’ (Triticum aestivum L.). Diluted extracts of shoot systems were applied to seeds of the test plant. The allelopathy of A. princeps and L. sonchoidsvaried with the concentration and type of species. The concentrated extracts (3.75 and 5% w/v.) were phytotoxic to germination of wheat. The reduction in the germination percentage reached 15 to 25% and 15 to 30% by treatment with A. princeps and L. sonchoids at concentration of 75 and 100% respectively after 8 days of treatment. The aqueous extract of Artemisia at 25% caused an increase in the root and shoot growth of the wheat seedlings in comparison with that of L. sonchoids and control. However, the growth of root and shoot gradually decreased with increasing extract concentration (50 to 100%). The biomass production parallel with that of root and shoot lengths were activated at low concentration and inhibited at high ones. The frequency and type of fungal species varies with different plants. The number of fungal population (CFU) on the rhizosphere of L. sonchoides was 562 colony/g, while it was 469 colony/g. in the rhizosphere of A. princeps.Ten different fungal genera were isolated from the rhizosphere of each of the two plants, the genus Aspergillus was the most frequent followed by MoniliaRhizoctonia and Rhizopus.


Key words: Allelopathic, Artemisia princepsLaunae sonchoids, rhizospheric fungi, wheat growth.