Résumé:
Uranium constitute a major constraint to the environment and the sustainable development
approach by degrading the ecosystem. The objective of the present work is to study the effect
of uranyl nitrates on some biometric, physiological and chemical parameters of a species
commonly cultivated in Algeria, the faba bean Vicia faba L minor, variety Sidi Aich. Seeding
takes place in a semi-automated greenhouse and in 8 kg plastic pots filled with a substrate that
contains 2/3 clay, 1/3 sand and potting soil. The bottom of each pot has been filled with gravel
to ensure good drainage, the irrigation is made to the reserve easily usable. 110 day old plants
subjected to increasing doses of uranyl nitate 20; 40 and 60 ppm then were dug up for
physiological, chemical analyzes in the laboratory. The results show significant accumulation
of uranium in the aerial, underground and pods with the largest cumulative amount remaining
in the roots of faba beans at doses of 40 and 60 ppm. There is also an increase in root weight,
stem length, root surface and thickness of sap-conducting vessels against a decrease in
chlorophyll "a" and the relative water content in the plant.
