Document Type : Short Communication
Authors
1
Master Graduate, Department of Biology, Islamic Azad University, Mashhad Branch, Mashhad, Iran
2
Professor, Department of Biology, Islamic Azad University, Mashhad Branch, Mashhad, Iran
3
Associate Professor, Department of Biology, Faculty of Basic Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
Abstract
Calcium is the most effective starter and transmitter of intracellular messages in response to biotic and abiotic stresses. In order to investigate the effects of calcium on vegetative and some growth, physiological and biochemical characteristics of Potato (Solanum tuberosum L.) a factorial experiment was conducted based on a completely random design with three replications under salinity stress. In this experiment, sodium chloride with the concentrations of 0 (control), 100 and 150 mM and calcium sulfate with the concentrations of 0 (control), 10 and 15 mM were used as different salinity levels and source of calcium, respectively 20 days after planting. Plants were harvested 30 days after the application of Sodium chloride and calcium sulfate and some growth and biochemical traits were estimated. Results showed that with increasing salinity, root and shoot length, root and shoot dry weight and K+ and Ca+2 levels were decreased, while sodium and proline levels in leaves and roots increased (P≤0.05). Application of calcium significantly increased growth, biochemical parameters and accumulation of Ca+2 and K+ in plants but the levels of Na+ and proline in the leaves and roots significantly decreased (P≤0.05). In this experiment, calcium reduced the harmful effects of salinity stress and the beneficial effect of using 15 mM calcium sulfate on the most traits was quite obvious.
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