List of Articles پلی‌اتیلن گلیکول

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  1 - Effect of Osmotic Stress on Seed Germination Indices of Nigella sativa and Silybum marianum
  حمیدرضا Balouchi A. Yadavi M. Movahedi Dehnavi
  Evaluation of medicinal plants to drought and salt stress tolerance, in an attempt to plant them under drought and saline regions, is of utmost importance. Environmental stresses, especially drought and salt, reduce the global crop yields more than other factors. Select More

  Evaluation of medicinal plants to drought and salt stress tolerance, in an attempt to plant them under drought and saline regions, is of utmost importance. Environmental stresses, especially drought and salt, reduce the global crop yields more than other factors. Selection of drought tolerant crops at germination stage, usually is, the fast and low cost method. In order to study the effect of osmotic stress on germination indices of black cumin and milk thistle, an experiment carried out in a completely randomized design with four replications at the Seed Technology Laboratoary of Yasouj University in 2008. Treatments were 0 (as control), -2.4, -4.8, -7.2 and -9.4 bar osmotic potentials created by using PEG 6000. Results showed that, decreasing of osmotic potential reduced speed of germination and its percentage, root and shoot lengths and dry matter in these two plants. Black cumin showed higher tolerance, to -4.8 bar osmotic potential, as compared to milk thistle. However, milk thistle showed higher tolerance to drought stress, up to this osmotic potential (-4.8 bar), compared to black cumin. Milk thistle had lower germination speed and percentage at higher drought stress as compared to black cumin. Generally, milk thistle showed better growth and survival than black cumin due to its higher root and shoot length and dry matter. Manuscript profile
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  2 - بررسی اثرات تنش اسمزی بر برخی از خصوصیات رشد گیاهچه‌ای در مرحله جوانه‌زنی برنج
  صدیقه رمضانی شهرستانی پیمان شریفی علی اکبر عبادی
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  3 - Effect of premixing of spermidine and polyethylene glycol on germination and physiological and morphological activity in Triticum durum wheat with Salinity stress
  Parvane Rahdari
  In order to effect of spermidine and polyethylene glycol pretreatment on germination and some physiological and morphological activity durum wheat under salinity stress a  experiment with 20 treatments, three replications was conducted in 60 experimental units. Tre More

  In order to effect of spermidine and polyethylene glycol pretreatment on germination and some physiological and morphological activity durum wheat under salinity stress a  experiment with 20 treatments, three replications was conducted in 60 experimental units. Treatments included five levels of spermidine (0/ 02,0/ 05,0/ 1 and 0/15 mM) and four levels of polyethylene glycol (0- 2,- 4 and -5 bar). The results showed that the use of spermidine increased the relative weight contact of leaf (RWC), leaf area ratio, chlorophyll s and phenolic compounds . In this study, carotenoids content and leaf antioxidant activity decreased with increasing spermidine level and also had no statistically significant effect on germination. With increase of polyetylen glycol antioxidant activity, carbohydrates and  total phenolics increased  but decreased germination. Therefore, according to the above results, application of spermidine and polyethylene glycol as seed pre-treatments can have significant effects on physiological and morphological activities in stress conditions and increase plant potency under stress conditions.    Manuscript profile
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  4 - بررسی اثرات تنش اسمزی بر برخی از خصوصیات رشد گیاهچه‌ای در مرحله جوانه‌زنی برنج
  صدیقه رمضانی شهرستانی پیمان شریفی علی اکبر عبادی
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