M U C H recent work points to the conclusion that remarkable stores of genetic variability exist in natural and in domestic species of plants and animals. Among the requirements for understanding the nature of this variability, and the forces by which it is maintained, are adequate data concerning the magnitude of genetic variability within populations. However, the evidence on variability in n...

Nanoparticles bio production, considering their performance in medicine and biologicalscience, is increasing; also, raising awareness of green chemistry and bioprocesses hasencouraged the use of environmentally friendly methods for the production of non-toxicnanomaterials.. Also uses of plant extracts are found to be more advantageous over chemical,physical and microbial (bacterial, fungal, alg...

Background Deficiency of available forms of phosphorus is common in most soils and causes reduction of crop plants growth and yield. Recently, model plants responses to phosphate (Pi) deficiency have been intensively studied. However, acclimation mechanisms of cereals like oat (Avena sativa L.), to low Pi stress remains not fully understood. Oat plants have been usually cultured on poor soils, ...