Wild plants play a vital role in human life as sources of food, feed, dyes, fuels, ethnomedicine, phytoremediation, etc. (Zimdahl, 2007). The importance of these plants is attributed to their richness in proximate primary composition (carbohydrates, proteins, fibers, fats, andminerals), and bioactive secondary metabolites (total phenols, flavonoids, tannins, alkaloids, saponins, etc.) (Newman and Cragg, 2007;Kumari and Kakkar, 2008). The biological activities of plants include many aspects, for example, antioxidant activity, allelopathic, antimicrobial, cytotoxic
Ranunculus sceleratus L. (Ranunculaceae) is an invasive alien widespread species commonly distributed in canals and drains banks. In Egypt, this plant exhibits extensive growth with occasional pure populations in the Nile Delta region. This study aimed to address the drivers for R. sceleratus abundance, phytochemical composition, and phytoremediation efficiency. The average abundance of R. sceleratus within 60 stands of 25 m2 each was 47.9. The average root and stem lengths were 31.5 and 60.1 cm, respectively. The abundance of R. sceleratus was positively correlated with pH, electric conductivity, organic carbon, Fe, Mn, and Zn, while negatively correlated with total dissolved phosphorus, Cu, Co, Cd, and Pb. The shoot had the highest values of all bioactive-metabolites, where phenols, flavonoids, tannins, alkaloids and saponins were recorded 23.16, 5.11, 14.78, 6.34 and 18.50 mg kg-1 dry weight, respectively. R. sceleratus had shoot and root bioaccumulation factors (BF) in the following orders: Cd> Ni> Cu> Pb> Zn> Fe> Mn> Co. R. sceleratus had BFshoot value of more than one for Ni, Cu, and Pb, while BFroot was greater than one for Cd, Ni, Cu, Pb, Zn, and Fe. Nevertheless, the translocation factor (TF) for all heavy metals were lower than one. Accordingly, R. sceleratus is a candidate for phytostabilization and/or phytoextraction tool for the most investigated heavy metals.
The present study focused on the floristic description of Family Asteraceae in the Al-Jufra region of Libya. This description includes a list of plant species of Family Asteraceae and their life-span, lifeforms and chorotypes. In 20 stands (25 m 2 each), a survey of the family Asteraceae species was conducted in Al-Jufra Oases (Waddan, Hun, Zalla, Sawknah and El-Fugha). The results showed that, the family Asteraceae included 23 species, belonged to 19 genera. Launaea and Picris were the predominant genera with three species each These species were classified into 14 annuals (60.87 %) and 9 perennials (39.13%). According to life-forms, the recorded Asteraceae members were grouped into 14 therophytes (60.87%), seven chamaephytes (30.43%) and two hemicryptophytes (8.7%). The chorological analysis revealed that, the Saharo-Arabian taxa (8 species, 34.9%) were the most dominant type. Further studies are required to highlight the importance and conservation of family Asteraceae species in the study area.
Callosobruchus maculatus (Coleoptera: Bruchidae), this beetle infests mainly Vigna unguiculata. There are several strategies to control of CW, by synthetic pesticides and physical means. The chemical applications are cheaper and easier to be applied but cause obvious consequences, which lead to a number of problems, The Essential oils (EOs) are widely applied in the traditional practices and in organic plant protection as insecticides repellents and antifeedant compounds. This study was carried out on 3 bioassay. The bioassay 1, carried out on artificial seeds, showed that the oily solutions could affect the oviposition. The average number of eggs laid by CW,was the highest on the oregano oil treatment at the dose of 2.0% followed by the control and the oregano oil treatment at the dose of 0.5%. The clove oil treatments induced the lowest egg laying. The bioassay 2, carried out on chickpea seeds in a completely randomized pattern, demonstrated that the average number of eggs laid on the chickpeas , was the highest on the control treatment followed by the oregano oil treatments at the doses of 0.5% and of 2.0%. The clove oil treatments induced the lowest egg- laying. The bioassay 3 treating directly the chickpea seeds. The average number of eggs laid on the chickpeas by the females within their life span was the highest on the oregano oil treatment at the dose of 2.0% followed by the oregano oil treatment at the dose of 0.5% and control. The clove oil treatments induced the lowest egg laying.
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