members of cyperacea family are among the common host species of rust fungi. to our knowledge, till now seven puccinia species have been recorded on cyperaceous plants in iran. of these, four species were known on carex. in present report, other rust species are reported on carex orbicularis subsp. kotschyana (boiss. & hohenacker) kukkonen. this report is based on infected specimen collected fr...

Recently, the Q biotype of tobacco whitefly has been recognized as the most hazardous strain of Bemisia tabaci worldwide, because of its increased resistance to some insecticide groups. As an alternative control agent, we selected an Isaria javanica isolate as a candidate for the development of a mycopesticide against the Q biotype of sweet potato whitefly. To select optimal mass production med...

Barbieri, M., Marcel, T. C., and Niks, R. E. 2011. Host status of false brome grass to the leaf rust fungus Puccinia brachypodii and the stripe rust fungus P. striiformis. Plant Dis. 95:1339-1345. Purple false brome grass (Brachypodium distachyon) has recently emerged as a model system for temperate grasses and is also a potential model plant to investigate plant interactions with economically ...

Stem rust caused by Puccinia graminis f. sp. tritici was among the most devastating diseases of barley in the northern Great Plains of the U.S. and Canada before the deployment of the stem rust-resistance gene Rpg1 in 1942. Since then, Rpg1 has provided durable protection against stem rust losses in widely grown barley cultivars (cvs.). Extensive efforts to clone Rpg1 by synteny with rice provi...

Vast collections of barley germplasm have been established and conserved in various global gene banks. These hold tremendous genetic diversity for resistance genes to Puccinia hordei, a causal agent leaf rust. This study was undertaken discover, characterize postulate the known Rph (resistance hordei) identify novel sources ASR (all-stage resistance) APR (adult plant P. hordei. A core set 315 l...

Diseases of the United States Department of Agriculture. It has been continued at the University of Michigan. Paper of the Department of Botany and of the University Herbarium, University of Michigan No. 397. 1 Mains, E. B., "Rye Resistant to Leaf Rust, Stem Rust and Powdery Mildew," Jour. Agr. Res., 32, 201-221 (1926). 2 Mains, E. B., and Dietz, S. M., "Physiologic Forms of Barley Mildew, Erys...

ABSTRACT Crown rust of barley, caused by Puccinia coronata var. hordei, occurs sporadically and sometimes may cause yield and quality reductions in the Great Plains region of the United States and Canada. The incompletely dominant resistance allele Rpc1 confers resistance to P. coronata in barley. Two generations, F(2) and F(2:3), developed from a cross between the resistant line Hor2596 (CIho ...

Our objective was to measure the proximate, starch, amino acid, and mineral compositions of grains, grain co-products, and other carbohydrate sources with potential use in pet foods. Thirty-two samples from barley (barley flake, cut barley, ground pearled barley, malted barley, whole pearled barley, pearled barley flakes, and steamed rolled barley); oats (groats, ground oatmeal, ground steamed ...