الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Allelopathy is a physiological phenomenon with numerous ecological implications. Biomolecules or allelochemicals are non-nutritional secondary metabolites that have stimulatory or inhibitory effects on the target organisms altering one or more physiological processes. In the present study, Ulva lactuca was selected as a donor species and both Dunaliella salina and Chlorella salinawas considered as recipient species. The main objective was focused on the effect of aqueous extractswith different concentrations of the donor species on growth and some physiological and metabolic aspects of the two recipient species.