Phytochemical Screening, Allelopathic and Bioherbicidal Potentialities of Euphorbia Guyoniana Boiss. and Reut. Leaf Extract

Résumé

Euphorbia guyoniana Boiss. & Reut. (Euphorbiaceae) is well known for the chemical diversity of its phytoconstituents, and toxicological properties that have been found in literature. However, research articles about their allelopathic characteristics are rarely reported. The current research study was conducted to explore phytochemical screening, allelopathic effects and their potential uses as natural herbicide of Euphorbia guyoniana Leaf extract, harvested from Oued Metlili, Algerian Sahara, on germination and seedling growth of four adventitious species (Bromus rubens L., Phalaris minor Retz., Plantago lagopus L., Ammi visnaga L.) and one cultivated species (Triticum durum L.) in laboratory conditions. The analyses of crude plant extract confirmed the flavonoids, anthocyanins, phenols and tannins, steroids, saponins, free quinone, sterols and triterpenes as well as carohydrates in the extract. Our results show that the leaf extract of Euphorbia guyoniana had significant allelopathic and bioherbicidal activity on germination and seedling growth of adventitious species and stimulatory activity on cultivated species at lower concentrations.

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