en Biochemical and Antioxidant Responses of Borage Seedlings in Saline Environments كشاورزی و اتنوبوتانی Agriculture & Ethnobotany پژوهشی Research <p dir="ltr" style="text-align: justify;"><strong>Background:</strong> Although borage (<i> Borago officinalis </i>L.) is a valuable medicinal plant, no information is available on the responses of this plant to salinity. For this reason, it is necessary to determine responses of this plant to salinity .</p> <p dir="ltr" style="text-align: justify;"><strong>Objective:</strong> Since germination and early growth stage is one of the most critical phases of plant life under salinity condition this experiment was conducted to determine some responses of borage to salinity at the seedling stage.</p> <p dir="ltr" style="text-align: justify;"><strong>Methods:</strong> This experiment was laid out in a completely randomized design with three replications and four salinity treatments, including distilled water (EC=0.0dS m^-1) and three saline water conditions with EC of 5.0, 10.0 and 15.0 dSm^-1.</p> <p dir="ltr" style="text-align: justify;"><strong>Results:</strong> With increasing EC , the content of free proline, soluble carbohydrates and proteins were increased. Moreover, the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and polyphenol oxidase (PPO) enzymes were significantly increased. Although seedlings dry weight and emergence percentage were declined with increasing EC, the seedlings had markedly growth/survival under salinity conditions.</p> <p dir="ltr" style="text-align: justify;"><strong>Conclusion:</strong> The survival and little reduction in emergence under salinity conditions (12.5%) indicated that borage was a salt tolerant species at the early growth stage. This tolerant is certainly due to the enhancement of antioxidant enzymes activities and compatible solutes content.</p> <div dir="ltr" style="text-align: justify;"></div> <p dir="ltr" style="text-align: justify;"><strong>Background:</strong> Although borage (<i> Borago officinalis </i>L.) is a valuable medicinal plant, no information is available on the responses of this plant to salinity. For this reason, it is necessary to determine responses of this plant to salinity .</p> <p dir="ltr" style="text-align: justify;"><strong>Objective:</strong> Since germination and early growth stage is one of the most critical phases of plant life under salinity condition this experiment was conducted to determine some responses of borage to salinity at the seedling stage.</p> <p dir="ltr" style="text-align: justify;"><strong>Methods:</strong> This experiment was laid out in a completely randomized design with three replications and four salinity treatments, including distilled water (EC=0.0dS m^-1) and three saline water conditions with EC of 5.0, 10.0 and 15.0 dSm^-1.</p> <p dir="ltr" style="text-align: justify;"><strong>Results:</strong> With increasing EC , the content of free proline, soluble carbohydrates and proteins were increased. Moreover, the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and polyphenol oxidase (PPO) enzymes were significantly increased. Although seedlings dry weight and emergence percentage were declined with increasing EC, the seedlings had markedly growth/survival under salinity conditions.</p> <p dir="ltr" style="text-align: justify;"><strong>Conclusion:</strong> The survival and little reduction in emergence under salinity conditions (12.5%) indicated that borage was a salt tolerant species at the early growth stage. This tolerant is certainly due to the enhancement of antioxidant enzymes activities and compatible solutes content.</p> <div style="text-align: justify;" dir="ltr"></div> Antioxidant enzymes , <,i>,Borago officinalis<,/i>, L., Osmotic adjustment, Salinity, Seedling stage Antioxidant enzymes , <,i>,Borago officinalis<,/i>, L., Osmotic adjustment, Salinity, Seedling stage 13 23 http://jmp.ir/browse.php?a_code=A-10-295-2&slc_lang=en&sid=1 H Naghdi Badi H Naghdi Badi 100319475328460038506 100319475328460038506 No Faculty of Agriculture, Tarbiat Modares University, Tehran Faculty of Agriculture, Tarbiat Modares University, Tehran A Sorooshzadeh A Sorooshzadeh sorooshzadeh@modares.ac.ir 100319475328460038507 100319475328460038507 Yes Faculty of Basic Sciences, Tarbiat Modares University, Tehran Faculty of Basic Sciences, Tarbiat Modares University, Tehran M Sharifi M Sharifi 100319475328460038508 100319475328460038508 No Faculty of Basic Sciences, Tarbiat Modares University, Tehran Faculty of Basic Sciences, Tarbiat Modares University, Tehran A Ghalavand A Ghalavand 100319475328460038509 100319475328460038509 No Faculty of Agriculture, Tarbiat Modares University, Tehran Faculty of Agriculture, Tarbiat Modares University, Tehran S Saadat S Saadat 100319475328460038510 100319475328460038510 No Department of Soil Reclamation and Sustainable Land Management, Soil and Water Research Institute, Tehran Department of Soil Reclamation and Sustainable Land Management, Soil and Water Research Institute, Tehran Sh Rezazadeh Sh Rezazadeh 100319475328460038511 100319475328460038511 No Department of Pharmacognosy and Pharmaceutics, Institute of Medicinal Plants, ACECR, Tehran Department of Pharmacognosy and Pharmaceutics, Institute of Medicinal Plants, ACECR, Tehran