Abstract
The present study was carried out in a climate chamber and water culture of physiology laboratory of Van Yüzüncü Yıl University, Faculty of Agriculture, Department of Horticulture. Demre pepper varieties are used in the study of different levels of calcium (Ca) morphological and biochemical effects of pepper plants under salt stress were investigated. The study was carried out in 16/8 hour light / dark photoperiod, 25 oC and % 70 humid climate chamber in controlled conditions. In order to determine the biochemical changes occurring in stressed plants, the amount of ions Na, K, Ca, Cl in root, stem and leaves of plants and Ca/Na ratio were determined. The accumulation of Na and Cl ions was found to decrease in root, stem and leaves as the dose of Ca increased. It can be said that increasing doses of Ca applications under salt stress are partially effective in reducing the negative effects of salt.
Highlights
NaCl reduces water potential and adversely affects plant growth by disrupting the ion balance in the cell
High doses of exogenous calcium reduce the permeability of the cell membrane to Na + ion
The common ideas of researchers trying to explain the role of calcium in the protection of salt stress through various mechanisms; calcium to strengthen the cell membrane and ion selectivity in the uptake and transport
Summary
NaCl reduces water potential and adversely affects plant growth by disrupting the ion balance in the cell. High salt concentrations decrease the calcium uptake and transport of the plant and cause calcium deficiency and ion imbalance in the plant [4, 5]. High doses of exogenous calcium reduce the permeability of the cell membrane to Na + ion. In this way, the accumulation of sodium in the cell and plant is prevented by passive uptake [7, 8]. The common ideas of researchers trying to explain the role of calcium in the protection of salt stress through various mechanisms; calcium to strengthen the cell membrane and ion selectivity in the uptake and transport. Rengel [10] (1992) suggested that the calcium element binds to the cell membrane to control the permeability and prevents the release of calcium present in the cell
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