Cima 2014 «Ressources, Biodiversité, Environnement» 09, 10 et 11 Décembre 2014, Ghardaïa, Algérie




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1er Congrès International sur le Milieu Aride

(CIMA 2014)

«Ressources, Biodiversité, Environnement»
09, 10 et 11 Décembre 2014, Ghardaïa, Algérie.




Allelopathic Effect of Different Concentration of Water Extract of Haloxylon scoparium on Seed Germination and Radicle Length of Bromus tectorum and Triticum aestivum
Salhi Nasrine1, Salama M. El-Darier2and Halilat M.El-Taher1

1-. Université Kasdi Merbah Ouargla Laboratoire de Bio-ressources sahariennes : préservation et valorisation, Faculté des Sciences de la Nature et de la Vie Ouargla 30 000 Algérie (salhi.ne@univ-ouargla.dz ) (nesrinemed@yahoo.fr).



2- Departments of Botany, Faculty of Science, University of Alexandria, Alexandria, Egypt .
Abstract:

Haloxylon scoparium aqueous leaf extract, prepared by 50 gm powder of dry leaf dissolved in 500 ml of double distilled water, were tested for their allelopathic effects on seed germination and radicle length of Bromus tectorum and Triticum aestivum . Allelopathic effect of leaf extract of different concentrations (2.5, 5, 7.5 and 10% w/v) .Haloxylon scoparium of and its possible allelopathic effect tested in a laboratory experiment. The experiment was conducted in sterilizes Petri dish with a 7 days for seed germination and radicle length on an average of 25° C. The effects of different concentrations of aqueous extract were compared to distilled water (Control C). Aqueous effect caused pronounced inhibitory effect on seed germination and root length of Bromus tectorum than Triticum aestivum. Seed germination and root length results indicated that the inhibitory effect was proportion to the concentration of the extract. Inhibitory effect was much pronounced radicle length rather than germination. Hence, it could be concluded that the mesquite leaf aqueous extract contain water-soluble allelochemicals. This could inhibit the seed germination and reduce radicle length of Bromus tectorum. It is suggested that Haloxylon scoparium extract a possibility of using for the discovery and development of environment friendly herbicides to control weeds.

Key words: Allelopathy, Haloxylon scoparium, seed germination, Bromus tectorum, Triticum aestivum, Bioherbicides.


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