to evaluate symbiotic effectiveness and salt tolerance of sinorhizobium meliloti strains, 50 rhizobial strains were isolated from root nodules of medicago sativa cultivated in tehran and zanjan fields. under n-free conditions, the symbiotic effectiveness of different sinorhizobium meliloti strains of bami cultivar were evaluated under greenhouse conditions using 50 sinorhizobium meliloti strain...

drought is the most common environmental stresses that affects plant growth. to study the combined effects of arbuscular mycorrhizal fungi (glomus intratadices) and jasmonic acid on growth and ecophysiologycal characteristics of pistachio seedlings cv. qazvini under drought stress, a greenhouse experiment was conducted in a completely randomized design with three replications. experimental fact...

the aim of this study was investigation the energy flow and global warming potential (gwp) of corn farm in gorgan city. for this purpose, data were collected from three conventional planting methods (spring planting, summer planting in wheat residue and summer planting without wheat residue) by using a face-to-face questionnaire performed with farmers in summer 2012. after the required data in ...

application of various composts has been intensified in agriculture, due to manifestation of negative effects of chemical fertilizers on environment and soil fertility. however, their usage should be accompanied by environmental and nutritional studies. to study the effects of sulfur granular compost on yield and yield components of two wheat cultivars, a pot experiment was conducted in a compl...

abstract: one of the most important and complicated social transitions has been growth of worldwide urbanization. the rapid growth of urbanization and cities has had different consequences which is associated with much urban vulnerability. physical, installation, environmental, economical and social inequalities have been the results of such urban growth. this paper aims to study and identify t...

omentin-1 is a novel adipokine that is predominantly secreted by visceral adipose tissue. circulating levels of omentin-1 is inversely related to obesity. there is limited information about the effect of exercise training on serum omentin-1 concentration. the aim of this study was to investigate the effect of four weeks of progressive resistance training on serum omentin-1 levels. 16 male wiste...

background and objectivesintercropping or simultaneous growing of two or more crops on the same piece of land has the potential of enhanced ecosystem productivity. in a cereal-legume intercropping system, an increase in cereal and a decrease in legume intercrop yield is reported. several indices such as land equivalent ratio (ler), relative crowding coefficient (k), competitive ratio (cr), aggr...

precise application of the n fertilizer rate is critical to achieve maximum yield. in major regions, empirical methods were used for determining n fertilizer requirement. these methods cannot take into account variation in management and environmental conditions on determining fertilizer requirement. crop simulation models can provide an alternative means of determining the optimum crop n requi...

in this study 19 blv infected and 2 healthy lymph nodes were analysed by western blotting to detect viral p 24 antigen . western blotting was carried out by rabbit anti p24 serum and p24 monoclonal antibody. rabbit serum in western blotting could detect 45, 50, 54, 58 and less than 19 kd bands of proteins and monoclonal antibody could detect 30, 32, 39, 45, 50 and 53 kd bands. our results indic...

a proteomic approach was conducted to further understand the mechanism of plant responses to salinity in hordeum bulbosom. three-week-old seedlings were treated with 300 mm of nacl for 21 days. total proteins of fourth leaf were extracted and separated by two-dimensional gel electrophoresis. more than 500 protein spots were reproducibly detected, including 46 spots that were up-regulated and 16...