to assess the effect of non chemical management of weed control on forage sorghum (sorghum bicolor) a field study was conducted in varamin, iran during 2010 crop year in a three- replicated- split factorial experiment laid out in randomized complete block design with four weeding levels (w1= one time cultivation at 3-leaf stage using a duck foot cultivator, w2= two times cultivation at 3 and 5-...

conclusions all plants could inhibit mushroom tyrosinase, but more investigations on human tyrosinase and clinical studies are needed. results the hydroalcoholic extract of p. alkekengi showed the most tyrosinase inhibitory effect with ic50 of 0.09 mg/ml vs. 0.38, 0.38 and 2.82 mg/ml of b. persicum, a. rosea and m. vulgare, respectively. m. vulgare exhibited uncompetitive inhibition and other p...

in order to evaluate cardinal temperatures and optimum thermal range of germination of three medicinal plants including thymus transcaspicus, foeniculum vulgare and  calligonumjunceum  an experiment was conducted in a completely randomized design with three replications. therefore, this experiment was conducted to study of the seed germination characteristics to temperature. the we used three m...

A new group of nitrogen-fixing Azospirillum sp. bacteria was isolated from the roots of the C4-gramineous plant Miscanthus. Polyphasic taxonomy was performed, including auxanography using API galleries, physiological tests and 16S rRNA sequence comparison. The ability of the isolates to fix dinitrogen was evaluated by amplification of the nifD gene, immunodetection of the dinitrogenase reductas...

Analysis of spatiotemporal variations in forest ecohydrological characteristics is critical for understanding the impacts climate change on ecological functions. In this study, using gross primary productivity (GPP), ecosystem water balance residual (eWBR) and use efficiency (eWUE) as function indices, annual mean precipitation (MAP) temperature (MAT) indicators, we assessed Lancang-Mekong Regi...