ارزیابی تعدیل تنش شوری با استفاده از کلسیم و پتاسیم در گیاه دارویی زنیان

Abstract

In order to investigate the effects of supplementary calcium chloride and potassium nitrate on plant growth of Ammi (Carum copticum L.) in different salinity levels and nutrient solutions (NS), an experiment based on randomized complete block design (RCBD) with factorial arrangement was conducted under greenhouse condition in the faculty of agriculture, Vali-e-Asr university of Rafsanjan, during September to December 2009. The treatments were three levels of salinity levels (0, 5 and 100 mmol) and five different nutrition solution including: Control: Hoagland solution only (N1); Hoagland solution plus 40 mM CaCl2 in nutrition solution (N2); Hoagland solution plus 40 mM CaCl2 as spray (N3); (4) Nutrient solution plus 40 mM KNO3 in nutrition solution (N4) and Hoagland solution plus 40 mM KNO3 as spray (N5). Results showed that relative water content of leaf did not affected by salinity, type of nutrient solutions and the interaction of salinity and nutrient solution. The lowest and the highest sodium content were observed in the control and 100 Mm NaCl treatments, respectively. K, Ca and Mg content significantly reduced in Ammi shoot with increasing salinity. Salinity increased soluble sugars in plant while type of nutrient solution and interaction of salinity and nutrient solution were not significantly affected soluble sugars. The Highest and lowest protein content of plant organs were observed in the control and 100 Mm NaCl, respectively. Type of nutrient solution also influenced protein content. The highest protein content related to N3 and the lowest related to N5.