Aya Azzam⁽¹⁾ *, Aya Kanawaty ⁽¹⁾ and Imad aldeen AlKhalaf ⁽¹⁾

(1). Dept. of  Biology, Faculty of science, Aleppo University, Aleppo, Syria.

(*Corresponding author: Aya azzam . E-mail: aya.azzam151094@gmail.com).

Received: 8/03/2021      Accepted: 23/05/2021

Abstract

Heavy elements have metallic properties such as electrical conductivity, which makes them more toxic even at low concentrations, and chromium is one of the most dangerous elements affecting plants by inhibition seedling and root growth in addition to its ability to reduce biomass. This research was conducted in the Laboratory of Pollution and Plant eenvironment in ddepartment of Plant bbiology, Faculty of Sciences, University of Aleppo. The aim of this research is to study the effect of chromium element on growth indicators of Zea mays seedlings. The seeds were treated with a series of graduated concentrations of potassium dichromate (25-50-100-200-400) mg. Seed germination indicators represented by germination percentage, dry and wet shoots and roots lengths and weights of maize seedlings were studied. Where all the indicators of seed germination decreased in all the studied concentrations, and the two concentrations (200-400) mg / L had the greatest effect as the roots were burned and died.

Keywords: Chromium, K₂cr₂o_7, potassium dichromate , Phenotypic traits,  Zea mays.

Full paper in Arabic: pdf