Arabinogalactan-proteins (AGPs) are widely distributed in higher plants and play multiple roles in various processes associated with plant growth and development, including cell expansion, cell proliferation and embryogenesis. Soluble extracellular AGPs are also abundant in the growth medium of suspension. Levels of cell wall bound and extracellular AGPs were measured spectrophotometrically usi...

Rhynchosporium consists of two species, R. secalis and R. orthosporum. Both are pathogens of grasses with R. secalis infecting a variety of Poaceae hosts and R. orthosporum infecting Dactylis glomerata. Phylogenetic analyses of multilocus DNA sequence data on R. secalis isolates originating from cultivated barley, rye, triticale and other grasses, including Agropyron spp., Bromus diandrus and H...

Endogenous indoleacetic acid (IAA) and cytokinin concentrations were measured by high performance liquid chromatography in leaf sections of an orchardgrass (Dactylis glomerata L.) genotype which exhibited a high capacity for somatic embryogenesis in vitro and in two genotypes that did not exhibit this capacity. The nonembryogenic genotypes contained 3- to 4-fold higher concentrations of zeatin,...

BACKGROUND AND AIMS Functional traits are indicators of plant interactions with their environment and the resource-use strategies of species can be defined through some key functional traits. The importance of genetic variability and phenotypic plasticity in trait variations in response to a common environmental change was investigated in two subalpine species. METHODS Two species with contra...

Since grass will likely be a dominant feedstock for on-farm anaerobic digestion in Northwest Europe, changes in the chemical composition of five common grass species with advancing harvest date in the primary growth were investigated and related to specific CH(4) yields. The increase in fibre components with advancing harvest date had a negative impact on the specific CH(4) yield (253 and 225 N...

Selection from novel orchardgrass (Dactylis glomerata L.) germplasm sources resulted in the development of an early maturing population. Fifty-eight families comprise this population and were evaluated under frequent infrequent harvest intervals at Lewiston Millville, UT, field locations during 2013 2014. The objective study was to characterize performance individual when compared with check cu...