changes germination, growth and anatomy vicia ervilia in response to light crude oil stress

Stress Response of Red Snapper (Lutjanus argentimaculatus) Exposed to Sublethal Concentrations of Crude Oil

Response of Germination and Seedling Growth of Pepper cultivars to Seed Priming by Plant Growth Regulators

In order to study the germination and growth of pepper seeds, a factorial experiment based on a completely randomized design with three replications was conducted. The first factor was consisting of five cultivars of pepper (Marquiza, Cadia, California Wonder, California Wonder 310 and California Wonder 300) and the second factor was gibberellic acid with three levels (0 as control, 250 and 500...

Morphological Changes in Response to Drought Stress in Cultivated and Wild Almond Species

This study was undertaken to identify morphological changes in young seedlings of 5 Iranian almond species (Prunus dulcis, P. eburnea, P. eleagnifolia, P. haussknechti, and P. scoparia) under polyethylene glycol-induced drought stress. Drought stress caused a significant reduction in plant growth parameters such as fresh and dry weights of plant organs, leaf number, total leaf area, and leaf re...

Changes of glutamine and asparagine content in cucumber seedlings in response to nitrate stress

Nitrogen fertilizer application rates in intensive agricultural systems have increased dramatically in recent years, especially in protected vegetable production systems. This excessive use of nitrogen fertilizer has resulted in soil secondary salinity, which has become a significant environmental stress for crops such as cucumber, in the protected farmlands. It is thus necessary to illuminate ...

Investigating the Sustainability of Asian, European and American Regional Gas Markets in Response to Currency and Crude Oil Price Shocks

In this study, we model the long-term and dynamic relationships between spot oil and exchange rates  and gas prices by applying the Markov switching vector self-regression model in three regional gas markets in USA, Europe and Asia. Price behavior is analyzed using Bayesian estimation to take into account the transition from an existing relationship and the delayed and recurring effects of pric...

Air Flow Detection in Crude Oil by Infrared Light

In this paper, we used infrared light in the range of 8-12 μm to develop and test an optical imaging system to detect air bubbles flowing in oil. The system basically comprises a broadband light source and a 31 × 32 thermopile array to generate images. To analyze the effects related to light absorption, reflection, and refraction on air-oil boundaries, a numerical model was developed and the pr...