Effects of Acacia cyanophylla Lindl. extracts on seed germination and seedling growth of four crop and weed plants

Authors : Asma El AYEB, Hichem Ben JANNET, Fethia HARZALLAHSKHIRI

Pages : 305-314

Doi:10.3906/biy-1204-4

View : 27 | Download : 9

Publication Date : 2013-12-01

Article Type : Research Paper

Abstract :The aqueous and organic extracts of the roots, stems, phyllodes, flowers, legumes, and seeds of Acacia cyanophylla Lindl. were assayed at different concentrations to assess their allelopathic potential. The extracts were tested on the seeds of 2 crops insert ignore into journalissuearticles values(Triticum aestivum L. and Lactuca sativa L.); and 2 weeds insert ignore into journalissuearticles values(Peganum harmala L. and Silybum marianum L.); species. The final germination percentages and the seedling shoot and root lengths were significantly reduced by the A. cyanophylla extracts as compared to the control. Aqueous extract from seeds was the strongest inhibitor of germination, shoot length, and root length for L. sativa and P. harmala. Triticum aestivum was tolerant to the aqueous extracts tested; however, S. marianum was moderately inhibited by those extracts. Organic extracts have reduced the germination of weed and crop seeds and seedling growth in high percentages. This study indicates that the biomass of A. cyanophylla contains allelochemicals and could be used as a postemergence herbicide.
Keywords : Key words Acacia cyanophylla Lindl, crop, weed, seeds, extracts