dutch elm disease is one of the most destructive and common plant vascular diseases now which isknown as a global problem. the aim of this study was comparison of early- and late-wood vesselsdiameter and ray dimensions. in 4 species: ulmus carpinifolia, zelkova carpinifolia, ulmus glabra andceltis australis from ulmaceae. then, very thin transversal sections were prepared and after differentsta...

The conservation of genetic resources in cryocollections requires reliable protocols for the cryopreservation and regeneration preserved material. With Ulmus glabra, thawed buds by vitro organogenesis has suffered from low shoot growth high contamination rates. dehydration before improved rate ameliorated cultures initiated buds, although degree success varied depending on donor tree.

hybrid nanostructures C. Michel, M. T. Elm, B. Goldlücke, S. D. Baranovskii, P. Thomas, W. Heimbrodt, and P. J. Klar Department of Physics and Material Sciences Center, Philipps-University, Renthof 5, 35032 Marburg, Germany Institute of Experimental Physics I, Heinrich-Buff-Ring 16, Justus-Liebig University, 35392 Giessen, Germany MPI for Computer Science, Stuhlsatzenhausweg 85, 66123 Saarbrück...

We sought to quantify changes in tree species composition, forest structure and aboveground forest biomass (AGB) over 76 years (1930-2006) in the deciduous Black Rock Forest in southeastern New York, USA. We used data from periodic forest inventories, published floras and a set of eight long-term plots, along with species-specific allometric equations to estimate AGB and carbon content. Between...