Effect of Inoculation of Growth-Enhancing Bacteria on Grain Yield and Physiological Characteristics of two Cultivars of Bread Wheat Treated with Cadmium Chloride

• Main Authors: Zahra Vatanpour, Rouhollah Motafakker Azad, Sodabe Jahanbakhsh Godeh Kahriz, Ali Movafeghi, Mohsen Sabzie Nojah Deh
• Format: Article
• Language: fas
• Published: University of Tabriz 2020-11-01
• Series: Journal of Agricultural Science and Sustainable Production
• Subjects: grain yield; antioxidant enzymes; bacteria; proline; wheat; cadmium
• Online Access: https://sustainagriculture.tabrizu.ac.ir/article_11440_1a4a786ea767adcf54153df73c3882b2.pdf

Abstract Background and Objective: The aim of this study was to evaluate the effects of growth-enhancing bacteria on reducing the negative effects of cadmium heavy metal in two varieties of bread wheat.   Materials and Methods:The experiment was performed on a completely randomized basis with three replications in the Mohaghegh Ardabili University.The experimental factors included two wheat cultivars (Gonbad and Karim),four levels of CdCl2.H2O (0, 75, 150 and 300 µm) and three bacterial levels (control ,Azotobacter Crococum and Pseudomonas potida).The grain yield, the amount of cadmium absorbed in the root,stem and seed organs and the activity of antioxidant enzymes were measured.   Results: The maximum grain yield was observed in spike using Azotobacter. Examination of the results of the effect of cadmium on the measured agricultural traits showed the maximum of these traits in the control and the minimum in the highest concentration of cadmium. The highest amount of soluble sugars in both cultivars was obtained in the presence of cadmium and the lowest amount in the control treatment and Azotobacter was superior to Pseudomonas in this regard. Bacteria reduced proline in the presence of cadmium. In the case of antioxidant enzymes, the presence of cadmium increased the amount of catalase and peroxidase but reduced the amount of polyphenol oxidase.   Conclusion:In general, the presence of bacteria reduced the toxicity of cadmium and the effect of the bacterium on the absorption of cadmium was significant and it was found that the Karim cultivar was more resistant to stress than the Gonbad cultivar.