نتایج جستجو برای: rusts
تعداد نتایج: 268 فیلتر نتایج به سال:
Rust fungi infecting hollyhock and other plants in Malveae are frequently intercepted at ports of entry to the USA, particularly Puccinia malvacearum and P. heterogenea. These two species can be difficult to distinguish and can be further confused with other, less common species of microcyclic rust fungi infecting hollyhock: P. heterospora, P. lobata, P. platyspora, and P. sherardiana. Molecula...
Cereal rust fungi are pathogens of major importance to agriculture, threatening cereal production worldwide. Targeted breeding for resistance, based on information from fungal surveys and population structure analyses of virulence, has been effective. Nevertheless, breakdown of resistance occurs frequently and continued efforts are needed to understand how these fungi overcome resistance and to...
Fungal species belonging to the genus Melampsora (Basidiomycota, Pucciniales) comprise rust pathogens that alternate between Salicaceae and other plant hosts. Species delineation and identification are difficult within this group due to the paucity of observable morphological features. Several Melampsora rusts are highly host-specific and this feature has been used for identification at the spe...
The biology and genetics of developmentally regulated resistance to rusts and powdery mildews is being examined through a study of wheat mutants that express enhanced resistance to one or more of these pathogens. Mutants, isolated from the wheat varieties Hobbit ‘sib’ and Guardian, are being mapped to determine the number, location, and effect of each mutation contributing to each pathogen resi...
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