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...

Lysine catabolism in seedlings of barley (Hordeum vulgare L. var. Emir) was studied by direct injection of the following tracers into the endosperm of the seedlings: aspartic acid-3-(14)C, 2-aminoadipic acid-1-(14)C, saccharopine-(14)C, 2,6-diaminopimelic acid-1-(7)-(14)C, and lysine-1-(14)C. Labeled saccharopine was formed only after the administration of either labeled 2,6-diaminopimelic acid...

In Hordeum vdgare, L., a strain known as "Okina-Mugi" shows variegation with white stripes on the green parts of the plant body. The genetics of the variegated barley was thoroughly studied by S8 (1921). The white stripes are due to the propagation of cells containing white plastids, which are produced by recurring exo-mutations of the green plastids. The strain carries a stimulating gene, by t...

Climate change, human population growth, health and food security, safety, sovereignty all demand that the role of biodiversity in plant breeding be revisited. From a biological standpoint, it is possible populations diverse plants developed by evolutionary will able to handle majority these major issues. Water stress soil nutrient deficiency may have negative impact on wheat (Triticum spp.) ba...

The incidence of clavicipitaceous anamorphic endophytes in a Hordeum spp. germplasm collection is reported. The potential application of endophytes as biocontrol agents against pests of cereal crops is recognized. Suggestions are proposed to modify existing germplasm maintenance procedures to ensure that both seed viability and endophyte viability and diversity are maintained in grass ,germplas...