ﻛﺎﻫﺶ اﺛﺮات ﺳﻮء ﺗﻨﺶ ﺷﻮری ﺑﺮ ﺧﺼﻮﺻﻴﺎت ﻣﻮرﻓﻮﻓﻴﺰﻳﻮﻟﻮژﻳﻚ ﻧﻴﺸﻜﺮ(Saccharum officinarum L) از ﻃﺮﻳﻖ ﻛﺎرﺑﺮدﺳﺎﻟﻴﺴﻴﻠﻴﻚ اﺳﻴﺪ

The effects of salicylic acid (SA) on the growth and some physiological responses of sugarcane (Saccharum officinarum L.) were studied under salt stress. The experiment design was a factorial of two factors, based on a randomized completely design with three replications. The experiment was conducted in a greenhouse at the Institute of Development Research and Training Sugarcane crop in 2012. Treatments evaluated in this study were three levels of salt stress, including (ECW <1 dS /m, ECW = 3 dS/m, ECW = 6 dS/m), and four concentrations of salicylic acid including 0, 0.5, 1 and 1.5 mM, respectively. The statistical analysis showed that the spraying of SA improved‚ plant height, shoot fresh weight and chlorophyll content. Efficient treatment was the treatment of spraying with 1 mM concentration which resulted in 11.38, 8.88 and 8.24 % increase in plant height‚ shoot fresh weight and chlorophyll content, respectively, in comparison with control treatment. The concentration of 1.5 mM caused a reduction compared to 0.5 mM and 1 mM. The results suggested that SA is effective in reducing the damage of salinity and in similar soil and water conditions the application of 1 mM can be recommended for sugarcane production.