مشخصات پژوهش

عنوان	کاربرد برگی عصاره جلبک دریایی، سیلیسیوم و سلنیوم باعث بهبود خصوصیات رشدی و عملکرد گوجه فرنگی در بسترهای مختلف کشت بدون خاک می شود
نوع پژوهش	مقاله چاپ‌شده
کلیدواژه‌ها	بهبود دهنده های رشد، پالم پیت، کشت بدون خاک، کوکوپیت، محلولپاشی
چکیده	The word biostimulant was apparently coined by horticulture specialists for describing substances promoting plant growth without being nutrients, soil improvers ,or pesticides. The use of fresh seaweeds as source of organic matter and as fertilizer is ancient in agriculture, but biostimulant effects have been recorded only recently. Chemical elements that promote plant growth and may be essential to particular taxa but are not required by all plants are called beneficial elements. The two main beneficial elements are Se and Si, present in soils and in plants. Many effects of beneficial elements are reported by the scientific litterature, which promote plant growth, the quality of plant products and tolerance to abiotic stress. This includes cell wall rigidification, osmoregulation, and reduced transpiration by crys-tal deposits, thermal regulation via radiation reflection, enzyme activity by co-factors, plant nutrition via interactions with other elements during uptake and mobility, antioxidant protection, interactions with symbionts, pathogen and herbivore response, protection against heavy metals toxicity, plant hormone synthesis and signaling. The aim of this study was to investigate the effect of different culture media and foliar application of some biostimulants (silicon, selenium and seaweed extract) on growth characteristics and yield of tomato (cv. Dafnis) under hydroponic condition.
پژوهشگران	مرضیه قنبری جهرمی (نفر پنجم)، علی محمدی ترکاشوند (نفر چهارم)، محسن خدادادی (نفر سوم)، حمیدرضا روستا (نفر دوم)، پیمان جلالی (نفر اول)