Role of proline acid in mitigating the adverse effect of drought in minerial content for macronutrients of Mung Bean plant (Vigna radiata L.)

Abstract

A experiment was conducted in the botanical garden of Biology Department in the College of Education for pure sience - Ibn al-Haytham / University of Baghdad, during the growing season 2010 to study the effect of increasing concentrations of proline acid (0,25,75,125) ppm on minerail content of macronutrients in Vigna radiata plant was exposured to different periods of drought (0,2,4,6) days. A factorial experiment within a completely randomized design with replication The results suggest a decrease in : Nitrogen, Phosphorus, Potassium, Calcium and Magnesium in Mung Bean plant (Vigna radiata) after being exposed to the drought condition in comparison to the control. 2-The content increase of the above ions, along with an increase in proline acid was independent of the drought period.3-The optimum concentration of proline acid was 75 ppm in achieving the maximum concentration of the acid.