Ata-Kuh forest, a preserved area within Hyrcanian relict forests, with an area of 700 ha is located in north of Iran. Based on floristic studies from 2011 through 2012, 194 vascular plant species were identified belonging to 143 genera and 66 families. Among our samples, 24 taxa were endemic to Hyrcanian area. The largest families in the area were Rosaceae (10.3 %), Poaceae (9.7 %), Asteraceae ...

impatiens necrotic spot virus (insv) infects ornamental plants worldwide. it has been reported from almost every ornamental screenhouse in tehran province. insv symptoms include necrotic leaf spot, chlorosis and stunting. heavy losses have been reported from insv in plants such as zinnia elegans, ficus benjamina, viola spp., saintpaulia ioantha, althea spp., cheiranthus cheiri, pelargoniumxhort...

The chemical constituents of the essential oil of Ruta graveolens L. from aerial parts collected from Iran were analyzed by GC and GC/MS. The oil yield of the dried plant obtained by hydrodistillation was 0.4% (v/w). Nineteen compounds, representing for 95.2% of the oil, were identified. The main classes of compounds were found to be ketons(46.6%) and sesquiterpenoids (13.3%) and monoterpenoids...

introduction: tea (camellia sinensis), is the most widely beverage after water across the world. the most important chemical composition in tea is phenolic compounds (catechins) that have antioxidant and anticarcinogenic properties and are benefited for cardiovascular disease. there are two major kinds of tea, black tea and green tea. green tea, is originated in china and dates back to several ...

1. introduction climate is a large system which is produced due to the relation and action between other large systems. if a change occurs in one of these systems, other systems will coordinate themselves with the change fast or slowly. the consequences of this coordination will impress the system that is starter of this change and an endless continuum of the links connects these systems togeth...