Alleviating of Lead toxicity by Salicylic acid in common bean (Phaseolus vulgaris L.) plants

Abstract

This study was conducted in the greenhouse of Biology Department in the College of Science-Salahaddin University-Erbil, which consisted of interaction application of Salicylic acid (SA) concentrations (0,100,200,400 ppm) and Lead (Pb) concentrations (0, 5, 10 ppm) on vegetative growth, yield and chemical components of common bean. It was found that SA significantly decreased the harmful effects of Pb on the vegetative growth characteristics such as plant height, number of leaves.plant -1 , number of branches.plant -1 , the dry weight of the shoot system, and yield components such as number of seeds.pod -1 , dry weight of 100 seeds. The adverse effects of Pb on chemical components such as chlorophyll a and total chlorophyll contents, total protein content of leaves , and total sodium by the influence of salicylic acid.