Effect of silicon application on wheat seedlings growth under water-deficit stress induced by polyethylene glycol
سال انتشار: 1394
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 84
فایل این مقاله در 8 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_IAR-34-1_005
تاریخ نمایه سازی: 13 شهریور 1402
چکیده مقاله:
Silicon is known to ameliorate the deleterious effects of drought on plant growth. We evaluated growth of wheat (Triticum aestivum L. CV. Chamran) under Water-Deficit Stress Induced by Polyethylene Glycol as affected by Si application. In this article, the effects of Si (as potassium silicate) on some parameters related to growth, chlorophyll concentration relative water content (RWC), electrolyte leakage, proline, soluble sugar, and inorganic ions in the leaves of wheat under ۲۰% (w/v) polyethylene glycol (PEG-۶۰۰۰) simulative drought stress are investigated. PEG stress depressed the growth of shoot, RWC and chlorophyll concentration. Addition of ۱.۰ mM Si could partially improve the growth of shoot (but not root) and increase the chlorophyll concentrations of stressed plants. The proline concentration in the leaves was markedly increased under PEG stress, whereas added silicon partially reversed this. PEG stress decreased the leaf soluble sugar concentration. There were significant negative regressions between proline concentration and Shoot dry weight, supporting the view that proline accumulation is a symptom of stress damage rather than stress tolerance. Addition of Si obviously increased Si accumulation in the shoot. Analyses of K, and Ca showed no accumulation of these ions in the shoot under water stress, and added Si even increased their concentrations under water stress. These results suggest that under PEG-induced water stress conditions, increase soluble sugar and decrease electrolyte leakage, contributed to the improved wheat growth by Si.
کلیدواژه ها:
نویسندگان
Aziz Karmollachaab
Department of Agronomy, Ramin Agriculture and Natural Resources University, Khuzestan, I. R. Iran
Mohammad Hosien Gharineh
Department of Agronomy, Ramin Agriculture and Natural Resources University, Khuzestan, I. R. Iran
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :