Indumentum types of the leaves in 31 species of Potentilla L.(Rosaceae) and four related genera, especially Tylosperma Botsch., Schistophyllidium (Juz.ex Fed.) Ikonn., Drymocallis Fourr.ex Rydb., and Sibbaldia L.from Iran were investigated.Indumentum ultrastructure was studied by scanning electron microscopy (SEM).SEM observation revealed three typ
Biochar soil amendment can improve growing medium water and nutrient status and crop productivity.A pot experiment was conducted using Solanum lycopersicum var.cerasiforme plants to investigate the effects of biochar amendment (20% application rate) on a soilless substrate, as well as on plant growth, fruit yield, and quality.During the experiment,
The article aims at explaining the influence of the resource factor on differentiation in the early non-Western societies.The author uses extensive historical and anthropological data and analytical tools of classical and contemporary sociological theories to prove that scientific works consider the sufficiency of life support resources as a signif