Effects of salicylic acid and silica on the growth and proline of radish under salinity stress
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 11
Abstract
salinity can improve soil structure but it can also negatively affect plant growth and crop yields. Salinity becomes a problem when enough salts accumulate in the root zone to negatively affect plant growth. Excess salts in the root zone hinder plant roots from withdrawing water from surrounding soil. This lowers the amount of water available to the plant, regardless of the amount of water actually in the root zone.To find out effects of salicylic acid and silica on the dry weight ,fresh weight ,height and proline in the plant radish under salinity was conducted a research in greenhouse of Islamic Azad University of Damghan .First seeds were planted in pots containing 4 kg amended soil. Seeds were irrigated after the planting with distilled water. After 3 weeks salicylic acid and silica treatments were added to pots. Saline solution as irrigation water were prepared by adding sodium chloride (NaCl). A factorial experiment in greenhouse was conducted in the base of Randomized Complete Design (RCD) with three replications. The study was designed as two factors , included 9 treatments with three replications and the first factor was three Levels of silica (si) with three concentrations as following: Si0 =0 (control): (Si1)=1.5 . : ( Si2) =3Mm and SA as following: (SA0) = 0 Mm , (SA1 )= 0.5 Mm,the (SA2) = 1.5 Mm .In the end ,analysis of variance indicated significant differences by salicylic acid and silica on Dry weight, of radish (shoot and root) in the all levels .The interaction between the salicylic acid concentrations and silica did not give significant differences in these parameters. The highest treatments in Dry weight of plants (shoot and root ) were 1.5 Mm/L and 3 Mm/L by salicylic acid and silica respectively. Also analysis of variance did not show significant differences(except effects of silica on root fresh weight ) by salicylic acid and silica on fresh weight of radish (shoot and root). The interaction between the salicylic acid and silica concentrations did not give significant differences in this parameter. Analysis of variance showed significant differences by salicylic acid and silica on root proline of radish in the all levels compared with control . The interaction between the salicylic acid and silica concentrations did not give significant differences in this parameter. Analysis of variance did not show significant differences by salicylic acid and silica and interaction on shoot proline of radish in the all levels compared with control. Analysis of variance did not show significant differences by salicylic acid and silica and their interaction on height of radish(shoot and root) in the all levels compared with control.
Authors and Affiliations
Mohammad Baghaei, Shahram Ashraf, Zarin Taj Alipour
Keywords
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