in order to evaluate the effect of sowing date and plant density on the morphological triats, yield and yield components of sweet corn (zea mays l. var sc. 403) an experiment was conducted at the khorasan razavi agricultural research and natural resources center, mashhad, iran during 2008. this experiment was carried out as split plot based on rcbd with four replications. the sowing date (14th ...

Datura is known as a medicinal plant and plant hallucinogen all over the world. Datura has a very special place in Ayurveda since all parts of the plant namely leaves, flowers, seeds, roots, have been used for a wide range of medication such as treatment of leprosy, rabies, insanity, etc. The extract of Datura, however, is a potent poison and its indiscriminate use may lead to delirium and acut...

two-spotted spider mite, tetranychus urticae koch. is one of the most harmful pest of common bean in most areas of iran, including lorestan province. the appropriate unit and universe sampling of mite population were investigated in common bean fields in borujerd, dorud and azna in 2008. the results showed that samples should be taken from top, middle and bottom of the plant height. in addition...

Serpentine soils are edaphically stressful environments that host many endemic plant species. In particular, serpentine soils are high in several heavy metals (e.g. nickel, cobalt and chromium) and these high heavy metal concentrations are thought, in part, to lead to varying levels of plant adaptation and soil affinities (i.e. endemic vs. non-endemic plant species). It is unclear, however, whe...

Antibacterial and antioxidant properties of the leaves and stem essential oils (EOs) of Jatropha gossypifolia and their efficacies against infectious and oxidative stress diseases were studied in vitro. The EOs obtained using Clevenger modified apparatus were characterized by high resolution GC-MS, while their antioxidant and antibacterial properties were examined by spectrophotometric and agar...

This study focuses on lead detoxification using roots, stems, leaves and whole plants of Plantago major L. and Phaseolus vulgaris L. (decoration kidney bean) as a ball hanging hydroponically in deionized water supplemented with concentrations of lead ion under different duration times and temperatures regimes. Roots of studied plants showed that the highest removal of lead than other parts, whi...

The barks and leaves extracts of Canarium patentinervium Miq. (Burseraceae Kunth.) were investigated for cyclooxygenase (COX) and 5-lipoxygenase (LOX) inhibition via in vitro models. The corresponding antioxidative power of the plant extract was also tested via nonenzyme and enzyme in vitro assays. The ethanolic extract of leaves inhibited the enzymatic activity of 5-LOX, COX-1, and COX-2 with ...

Domestic sources of drugs, always potentially iimportaiit, have increased significancoe in time of war when foreign markets are -unavailable or noniexistent. With this thought in mind, a preliminaryexaminationl was made of Mesenmbryanithem?,um edldi L., commonlly known as the Hottentot Fig, as a possible source of tannins. The great astringency of the sap which can be readily demonstrated by th...