Effect of Zinc (Zn) on Some Physiological Characteristics of Rice Seedling

Mahmoud Asadi¹, Sara Saadatmand ¹, Ramzan Ali Khavari-Nejad ¹, Mahmoud Ghasem-nejad ² and Mohammad Hossein Fotokian³

¹Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.

²Department of Biology, Faculty of Science, University of Guilan, Rasht, Iran.

³Department of Crop Science and Plant Breeding, College of Agricultural Sciences and Medicinal Plant Research Center, Shahed University, Tehran, Iran.

Abstract: Hydroponically studies were conducted in rice seedlings (Oryza sativa L., cv. Tarom Hashemi) under different Zn levels. The nutrient solution treatments were prepared of three 4 zinc levels (0.5, 5,50 and 100 µM ZnSO4). Zn decreased Zn-TF, increased Zn accumulation in roots. Addition of Zn from 0.5 to 5 µM in nutrient solution increased shoot length, plant dry weight, superoxide dismutase (SOD) and decreased ascorbate peroxidase (APX) and guaiacol peroxidase (GPX) while addition of Zn from 5 to 100 µM had the reverse effects.

Keywords: Zinc; Accumulation; Growth; Oryza sativa; Antioxidant enzymes

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