نتایج جستجو برای: گیاه شاهی lepidium sativum

تعداد نتایج: 40142  

2011
Tadeusz Banaszkiewicz Józef Szarek Karol Wysocki

Our study was a biological evaluation of soil contamination near a non-operating pesticide tomb. The soil contaminated with pesticides had a negative effect on the growth of crustaceans such as Heterocypris incogruens (Ostracodtoxkit test) and the development of plants such as Lepidium sativum, Sinapis alba, and Sorghum saccharatum (Phytotoxkit test). This adverse effect persisted up to 5 years...

Journal: :International Current Pharmaceutical Journal 2015

Journal: : 2022

Salinity has been a major problem for world agriculture in recent years, limiting plant production. This study was carried out to determine the effect of salt stress on seedling emergence parameters Dadaş and Helen garden cress cultivars. Three doses (S0: 0 mM NaCl (control), S1: 30 S2: 60 NaCl) salinity level were applied as irrigation their effects (emergence percentage, speed, mean time, dai...

ژورنال: :زیست شناسی گیاهی ایران 0
شهرام پورسیدی زهرا اسرار 03413202063 شهلا هاشمی

منگنز یکی از عناصر ضروری کم مصرف برای همه گیاهان است، اما سمّیت آن نشانه های نامطلوبی در گیاه ایجاد می کند. در خاک های اسیدی سمّیت منگنز عمومی تر از کمبود منگنز است. در این مطالعه، به علت اهمیت شاهی در بسیاری از موارد مانند استفاده گیاه در دارو، غذا و اقتصاد، اثر سمّیت منگنز با غلظت های 0، 250، 500 و 800 میکرومولار روی بعضی از فاکتور های رشد و ویژگی های بیوشیمیایی بررسی گردید. نتایج، کاهش طول ساقه...

مقدمه پژوهش حاضر با هدف بررسی تأثیر غلظت‏های مختلف فاضلاب خام شهری بر تجمع نیترات سبزیجات برگی برای اولین بار در محیط آزمایشگاهی انجام گرفت. مواد و روش‌‌ها بذر سبزیجات برگی شامل شاهی (Lepidium sativum) و بذر اسفناج (Spinacea oleracea) کشت و به صورت 4 تیمار: T1 (آبیاری فقط با آب چاه "تیمار شاهد")، T2 (آبیاری با فاضلاب خام به صورت یک‏بار در هفته)، T3 (آبیاری با فاضلاب خام به صورت دو بار در هفته...

Journal: :Environmental microbiology 2016
Manabu Kanno Philippe Constant Hideyuki Tamaki Yoichi Kamagata

High-affinity hydrogen (H2 )-oxidizing bacteria possessing group 5 [NiFe]-hydrogenase genes are important contributors to atmospheric H2 uptake in soil environments. Although previous studies reported the occurrence of a significant H2 uptake activity in vegetation, there has been no report on the identification and diversity of the responsible microorganisms. Here, we show the existence of pla...

Journal: :The Science of the total environment 2003
Brett Robinson Céline Duwig Nanthi Bolan M Kannathasan A Saravanan

Watercress (Lepidium sativum) is consumed as a vegetable, especially by the indigenous community in New Zealand. An investigation was carried out on the accumulation of arsenic by watercress, following earlier reports of inordinate arsenic concentrations in some aquatic macrophytes collected from the Waikato River, North Island, New Zealand. The Waikato River and some other aquatic systems in T...

Journal: :Journal of the American Mosquito Control Association 1995
V L Kramer J N Collins K Malamud-Roam C Beesley

Full tidal action was restored to a 28-ha marshland in the brackish region of the San Francisco Bay Estuary to evaluate the impact of increased tidal circulation on Aedes dorsalis abundance. One year after project completion, mosquito abundance had decreased by 98.7%, from an average of 3.6 to 0.3 4th-instar larvae per dip. Larvicide applications have consequently been reduced from approximatel...

2003
I. Caballero J. M. Olano J. Loidi A. Escudero

The aim of this paper is to evaluate seed bank density and composition along a semi-arid gypsum gradient in Central Spain. Seed bank density was relatively high (16,214 seed/m) with a very clumped spatial distribution. Landform and microslope were the best predictors for seed density, indicating that density can be at least partly interpreted as a result of the physical processes regulating sec...

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