Comparative studies on the role of benzoic, t-cinnamic, and salicylic acids on growth, some biochemical aspects, and yield of three flax cultivars grown under sandy soil conditions

Abstract

Abstract Background and objective Phenolic compounds are low molecular compounds present in all tissues of higher plants and play an important role in plant development. A field experiment was carried out during two winter seasons 2014/2015 and 2015/2016 to compare the role of benzoic, t-cinnamic, or salicylic acids on some growth and biochemical parameters as well as the seed yield of three flax cultivars grown under sandy soil conditions. Results Results show the superiority of Blanka cultivar in some growth parameters, photosynthetic pigments, indole acetic acid (IAA), phenolic contents, seed yield, and some yield components. Application of different phenolic acids enhanced growth parameters, photosynthetic pigments, IAA, phenolic contents, seed yield, and yield components as well as oil and carbohydrate percentages in the yielded seeds. Conclusion Salicylic acid was the most efficient phenolic acids in increasing most of the studied growth and yield parameters via improving various studied biochemical parameters, where salicylic acid at 100 mg/l was the most effective treatment on the three tested cultivars.

Keywords

• Flax
• Benzoic acid
• t-Cinnamic acid
• Salicylic acid
• Seed yield
• Seed quality