TY - JOUR JF - jispp JO - VL - 3 IS - 7 PY - 2014 Y1 - 2014/9/01 TI - The effects of salinity and salicylic acid on morphological and physiological traits ‎of sorghum (Sorghum bicolor (L.) Moench) at earlier growth stages ‎ TT - تاثیر شوری و سالیسیلیک اسید بر ویژگی‌های مورفولوژیک و فیزیولوژیک سورگوم در ‏‏ مراحل اولیه رشد‎(Sorghum bicolor (L.) Moench)‎ N2 - In order to evaluate morphological and physiological responses of sorghum (Pegah ‎cultivar) to salt stress (0, 5, 10 and 15 dS/m) and different salicylic acid (SA) levels ‎‎(0, 0.75 and 1.5 mM), an experiment was carried out in research green house of ‎college of Agriculture Shiraz University during 2012 using a factorial as randomized ‎complete block design with four replications. The results showed that salinity ‎reduced stem length and leaf area of sorghum and the effect of salinity level at 15 ‎dS/m was more pronounced. On the contrary, foliar application by SA increased ‎these parameters. Moreover, salt stress and foliar SA increased the activity of ‎catalase, superoxide dismutase, peroxidase and ascorbate peroxidase and ‎chlorophyll content. In summary, it can be concluded that foliar application of ‎sorghum by SA improved growth and enhanced salt tolerance in this plant. Indeed, ‎SA stimulated sorghum growth under salinity stress via enhanced anti-oxidant ‎defense system, reduced oxidative stress and increased photo synthetic pigments. ‎ SP - 57 EP - 66 AU - Diyanat, Zohre AU - Maghsoudi, Kobra AU - Diyanat, Zahra AU - Emam, Yahya AD - Shiraz University KW - NaCl KW - catalase KW - superoxide dismutase UR - http://jispp.iut.ac.ir/article-1-72-en.html ER -