Medicinal plant species constitute a considerable part of the flora in Iran and play a major role in the composition of plant communities. Therefore, it is necessary to recognize the factors leading to the establishment and distribution of vegetation. For data sampling (2012), land units were specified. The plot size was determined using minimal area method and number of plots was determined by...

Concerns about a global decline in pollinators have called for more knowledge the factors influencing wild pollinator abundance and diversity agroecosystems. Agricultural intensification has been identified as main cause of this “global crisis”, particularly due to reductions natural areas holding critical floral nesting resources. Maintaining native plants agricultural landscapes (e.g., field ...

application   of plants to remove heavy metals from soil (phytoremediation) is   expanding due to its cost-effectiveness as compared to conventional methods   and it has shown a great potential. since contaminants such as pb have a   limited bioavailability in the soil, methods to facilitate their   translocation to the shoots and roots of plants are required for efficient   phytoremediation. t...

Different formae speciales of Fusarium oxysporum are the main causal agent of Fusarium wilts. In 2008 and 2009 we collected F. oxysporum samples from symptomless Abutilon theophrasti, xanthium strumarium, Chenopodium album, Matricaria perforata, Ambrosia artemisiifolia, Polygonum lapathifolium, Sonchus arvensis, Amaranthus blitoides, Amaranthus retroflexus, Datura stramonium, Sorghum halepense ...

The chemical composition of the essential oils of Melaleuca armillaris Sm., Melaleuca styphelioides Sm. and Melaleuca acuminata F. Muell., collected in Tunisia, was studied by means of GC and GC-MS analysis. In all, 46 compounds were identified, 38 for M. armillaris, 20 for M. acuminata and eight for M. styphelioides, respectively. The presence of a sesquiterpenic fraction (52.2%) characterized...

The experiments were carried out to study the kinetics of mentha oil extraction from mentha leaves (Mentha arvensis L.) and the quality analysis was carried out for the oil extracted. The oil was extracted from mentha leaves at three different moisture contents of 74.30 per cent (fresh leaves), 42.30 per cent (shade dried) and 19.35 per cent (sun dried) using hydro distillation method. Various ...

Using a polyethylene glycol-mediated uptake procedure, protoplasts from a range of Cruciferous species were infected with cauliflower mosaic virus; they include Moricandia arvensis, a plant not k n o w n to be susceptible. With this technique > 90~o of turnip protoplasts were infected, each producing an average of 104 to 105 viral genome equivalents. Filter hybridization and fluorescent antibod...