Physiologic Specialization of Puccinia triticina in Canada in 1998
نویسندگان
چکیده
منابع مشابه
Virulence and molecular polymorphisms of the wheat leaf rust fungus Puccinia triticina in Canada
Populations of Puccinia triticina, one of the casual agents of wheat leaf rust disease, in the pacific (British Columbia and Alberta), prairie (Manitoba and Saskatchewan), and eastern regions (Quebec and Ontario) of Canada from 1997 to 2007 were analyzed for virulence and genetic diversity by revealing expressed sequence tag derived simple sequence repeat (EST-SSR) polymorphisms. Since 1997, a ...
متن کاملWheat leaf rust caused by Puccinia triticina.
UNLABELLED Leaf rust, caused by Puccinia triticina, is the most common rust disease of wheat. The fungus is an obligate parasite capable of producing infectious urediniospores as long as infected leaf tissue remains alive. Urediniospores can be wind-disseminated and infect host plants hundreds of kilometres from their source plant, which can result in wheat leaf rust epidemics on a continental ...
متن کاملGenetic Variation and Virulence on Lr26 in Puccinia triticina.
ABSTRACT The genetic relationships between isolates of Puccinia triticina virulent on wheat with the Lr26 resistance gene were studied. The diversity within and between isolates of P. triticina from Israel, Europe, and the United States was determined by virulence on near-isogenic Thatcher lines and by random amplified polymorphic DNA. According to the molecular markers, isolates that were viru...
متن کاملMolecular Diversity in Puccinia triticina Isolates from Ethiopia and Germany
A total of 43 isolates of the wheat leaf rust fungus, Puccinia triticina Eriks, collected from Ethiopia and Germany were analysed for their genetic diversity using the amplified fragment length polymorphism (AFLP) technique. Out of 18 EcoRI/MseI primer combinations screened, 15 produced 219 highly polymorphic fragments. The average AFLP difference between pairs of the leaf rust isolates (26 fro...
متن کاملPHYSIOLOGIC SPECIALIZATION OF Exserohilum turcicum, IN KENYA
Isolates of E. turcicum from Kenya showed variation in growth rates when grown on potato dextrose agar at 22C. Most colonies reached a diameter of 9 cm in 7 to 11 days. Single-spore colony colors were similar, appearing whitish with a greenish tint that disappeared during and after onset of sporulation. Nineteen isolates were inoculated on Ht-bearing differentials of maize. Three isolates were ...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2001
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pdis.2001.85.2.155