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  1 - The effect of salicylic acid foliar spraying on morphophysiological characteristics of common mallow and Moldavian balm
  Hassan Nourafcan Afsaneh Mahboubi
  10.22034/aej.2017.535143
  Salicylic acid has an important role in some plant physiological processes as a plant growth regulator. In current study, the effect of salicylic acid on morphological and physiological traits of common mallow and Moldavian balm was studied based on completely randomize More

  Salicylic acid has an important role in some plant physiological processes as a plant growth regulator. In current study, the effect of salicylic acid on morphological and physiological traits of common mallow and Moldavian balm was studied based on completely randomized block design in farm condition at Bostanabad county, Iran. Plantlets were sprayed by 0, 150 and 300 mg/L salicylic acid two month after planting and two weeks after. In flowering stage, the plant height, stem, root and internode length, leaf, root and lateral roots number, dry and fresh weight of stem, root and leaf, dry matter percentage of root, stem and leaf and also chlorophyll content were recorded. Salicylic acid spraying improved all common mallow traits but root number and length. In Moldavian balm, salicylic acid application increased all traits. However, it decreased root and stem dry matter percentage and had no effect on root number and length. Also, 300 mg/L of salicylic acid was more effective than 150 mg/L in common mallow traits except dry leaf weight and root dry matter percentage and in Moldavian balm expect length internode. Thus, foliar spraying of salicylic acid can be recommended for as a simple and economical method for yield and growth indices improvement of common mallow and Moldavian balm. Manuscript profile
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  2 - Effect of salicylic acid on salinity stress tolerance improvement of peppermint (Mentha piperita L.) in greenhouse
  Hassan Nourafcan
  Peppermint (Mentha piperita L.) is one of the most important medicinal plants belonging to the Lamiaceae. In order to study the effect of different concentration of salicylic acid (SA) and salinity stress on peppermint morphological characteristics, an experiment was co More

  Peppermint (Mentha piperita L.) is one of the most important medicinal plants belonging to the Lamiaceae. In order to study the effect of different concentration of salicylic acid (SA) and salinity stress on peppermint morphological characteristics, an experiment was conducted as a factorial design based on completely randomized design with four replications. To investigate the interaction of salicylic acid and salinity stress, the following treatments were used: four NaCl concentrations of 0, 50,100 and 150 mmolL-1 and four salicylic acid 0, 0.1, 0.5 and 1 mmolL-1. The plants were grown in pots until they grow to harvesting stage. At the end of experiments, various traits such as height of plants, number of lateral branches, node and leaf, diameter of main shoot and shad of canopy, dry and fresh weight of shoot, fresh weight of root, length of internodes and root were measured. Plants that were under salinity stress level of 150 mmolL-1 died before end of experiments. The results showed that effects of salinity stress on number of lateral branches, number of node and leaf, shoot diameter, dry and fresh weight of shoot, length of internodes and root and fresh weight of root, SA on number of lateral branches and dry weight of shoot and their interaction on height of plants and shad of canopy were significant on peppermint. The highest suppress effect in salinity stress was obtained in 100 mmolL-1 NaCl and the effective in SA were 0.1 and 0.5 mmolL-1. Manuscript profile