نتایج جستجو برای: plant toxicity

تعداد نتایج: 505956  

Journal: :حفاظت گیاهان 0
رفیعی کرهرودی رفیعی کرهرودی محرمی پور محرمی پور فرازمند فرازمند کریم زاده اصفهانی کریم زاده اصفهانی

abstract indian meal moth, plodia interpunctella hübner (pyralidae) is one of the most important stored-product insects that are controlled by fumigants. however, the use of plant essential oils and their constituents may have the advantage over conventional fumigants in terms of low mammalian toxicity and can be used as alternatives to conventional fumigants. therefore, in this research, repel...

Journal: :حفاظت گیاهان 0

indian meal moth, plodia interpunctella hubner is one of the most important stored-product insects that are controlled by fumigants. however, the use of plant essential oils and their constituents may have the advantage over conventional fumigants in terms of low mammalian toxicity and can be used as alternatives to conventional fumigants. therefore, in this research, repellent activity of 18 p...

2014
Jegathambigai R Naidu Rusli Ismail Sreenivasan Sasidharan

Purpose: To determine, in Sprague Dawley rats, the toxicity profile of the methanol extract of Mentha spicata, a plant used in folklore medicine for the treatment of various forms of pain. Methods: The plant extract, at concentrations ranging from 100 0.07 mg/ml, was used to determine the median lethal concentration (LC50) based on brine shrimp lethality assay. Artificial sea water served as co...

2017
Osbourne Quaye Precious Cramer Mark Ofosuhene Laud K N Okine Alexander K Nyarko

Extracts of Desmodium adscendens (Sw) DC are used for the treatment of various diseases but limited toxicological evaluations have been done on the medicinal plant. This study investigates toxicity effects of the leave extract of D adscendens, and the possibility of drug-drug interaction of the plant extract when co-administered with other drugs. Oral administrations of leaf extract of D adscen...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

Journal: :Mathematical biosciences 2011
Zhilan Feng Zhipeng Qiu Rongsong Liu Donald L DeAngelis

A system of ordinary differential equations is considered that models the interactions of two plant species populations, an herbivore population, and a predator population. We use a toxin-determined functional response to describe the interactions between plant species and herbivores and use a Holling Type II functional response to model the interactions between herbivores and predators. In ord...

2006
Ya Li Zhilan Feng Robert Swihart John Bryant Nancy Huntly

Numerous empirical studies over the past two decades have documented substantial effects of plant toxins on diet choice and feeding behavior of herbivores, but analytical models have failed thus far to incorporate toxin-mediated effects of browsing on plant population dynamics. We study a mathematical model that incorporates plant toxicity in the functional response of plant–herbivore interacti...

2016
Huajin Sheng Jian Zeng Yang Liu Xiaolu Wang Yi Wang Houyang Kang Xing Fan Lina Sha Haiqin Zhang Yonghong Zhou

Sulfur (S) is an essential macronutrient that has been proved to play an important role in regulating plant responses to various biotic and abiotic stresses. The present study was designed to investigate the effect of S status on polish wheat plant response to Mn toxicity. Results showed that Mn stress inhibited plant growth, disturbed photosynthesis and induced oxidative stress. In response to...

2016
Shiv Shankar Shukla Gotmi Sharwan Parag Jain Ravindra Pandey

Medicines obtained from natural sources have become the basis for pharmaceutical drugs. Traditional herbal medicines are naturally occurring plant derived substances; these have been used for treatment and cure of various diseases and as a nutraceuticals. Toxicological research and testing help to live safely and predict benefit from synthetic and natural substance while avoiding harm. The toxi...

A.K. Ejraie A.R. Tavakoli H.R. Owliaie M. Rajaie,

The impact of different concentration of zinc (Zn) and boron (B) on growth and mineral composition of lemon seedlings (Citrus Aurantifolia L.) was studied under greenhouse conditions. We used five concentration levels of B (0, 2.5, 5, 10 and 20 μg g-1 soil) and three of Zn (0, 5 and 10 μg g-1 soil). Fresh and dry plant weights of the control treatment were strongly decreased with B levels highe...

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