Alterations in content of phenolic acids and growth parameters of two rice (oryza sativa) cultivars in response to salicylic acid under abiotic stress
Journal Title: International Journal of Farming and Allied Sciences - Year 2015, Vol 4, Issue 2
Abstract
Present study was conducted to analyzing the allelochemicals by HPLC method in root exudates of two rice cultivars (Tarom and Neda) under salinity stress condition. The selected cultivars were grown in hydroponic system with different levels of salinity and foliar application of salicylic acid. The root exudates were quantified by HPLC method. The effects of treatments on some growth parameters of studied cultivars were also determined. Among the studied phenolic acids, P-coumaric acid just detected in tarom root exudates and p- hydroxybenzoic acid and vanillic acid were detected only in some combined treatments [such as EC (4 dS/m)+ SA (1%); EC (8 dS/m)+ SA (1%); EC (4 dS/m)+ SA (2%); EC 8 (dS/m)+ SA (2%)]. The most significant positive effect on leaf area was belonged to SA 2% (with 14% increase). The highest increase in chlorophyll contents was obtain when the SA (%2) + EC (4dS/m) was used (with %12.5 increase compare to control). Accordingly, if the salinity problem was observed in paddies it may be possible to recommend the foliar application of SA 2% for better stand of seedlings and more phenolic acids secretion.
Authors and Affiliations
Mohammadali Esmaeili , Ayoub Heidarzade and Azar Zeinali
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