Volume 3, Issue 7 (vol. 3, No. 7 2014)                   2014, 3(7): 57-66 | Back to browse issues page

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1- Shiraz University
2- Shiraz University , Yaemam@gmail.com
Abstract:   (6706 Views)
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. ‎
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Type of Study: Research | Subject: Salt Stress
Received: 2013/05/26 | Accepted: 2014/01/6 | Published: 2014/09/8

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