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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