Comparative study of heavy metals stress on anatomy and morphology of different wheat (Triticum sativum L.) genotypes

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 371

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شناسه ملی سند علمی:

BIOCONF20_603

تاریخ نمایه سازی: 28 اردیبهشت 1398

چکیده مقاله:

The petrochemical industry is one of the most polluting industries in the world. The aim of this study is comparing the effect of heavy metals of petrochemical sewage on anatomy and morphology of two wheat cultivars (Bahraman and Chamran). The plants were irrigated with different concentrations of wastewater (0, 25%, 50% and 100%) polluted with heavy metals (cadmium, lead, manganese, copper, chrome) for one month. All works were accomplished by using a Randomized Complete Design with 4 repeats. Data analysis was done using a statistical package of SPSS with the 0.05 probability level. For the anatomical study, the cross-sections were prepared from leaves and roots, stained, viewed and photographed using a light microscope. The leaf xylem increased in Chamran in parallel to pollutants concentrations, while it increased in Bahraman just at 25% concentration and decreased in other concentrations. The leaf sclerenchyma thickness increased in both cultivars in response to increasing wastewater concentrations. The thickness of the leaf cuticle of Chamran increased with increasing pollutants, while no changes were observed in Bahraman.The thickness of root xylem increased in both genotypes with increasing wastewater concentration. No changes were observed in other anatomical features of roots in response to wastewater treatment. Also, the height, fresh and dry weight of plants, and leaf area decreased with increasing wastewater concentrations, in both cultivars. According to the results, two cultivars showed various responses to wastewater pollutants. Based on the morphological and anatomical results, Bahraman cultivar was more sensitive than Chamran in response to heavy metal stress-induced by petrochemical wastewater and Chamran cultivar performed a better function in the heavy metal-polluted agricultural area.

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نویسندگان

Fariba Noedoost

Department of Biology, Faculty of Science, Behbahan Khatam alanbia University of Technology

Shokoofeh Hajihashemi

Department of Biology, Faculty of Science, Behbahan Khatam alanbia University of Technology