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ARS Home » Midwest Area » St. Paul, Minnesota » Cereal Disease Lab » Research » Publications at this Location » Publication #217655
Title: Population genetics of Puccinia coronata f. sp. avenae in the United States

Author
item Dambroski, Hattie
item Carson, Martin

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 3/15/2007
Publication Date: 4/2/2007
Citation: Dambroski, H.R., Carson, M.L. 2007. Population genetics of Puccinia coronata f. sp. avenae in the United States [abstract]. In: Proceedings North American Rust Workshop, April 2-4, 2007, St. Paul, Minnesota. p. 18.

Interpretive Summary:

Technical Abstract: Puccinia coronata, oat crown rust, is a serious disease of cultivated oat. In order to look at the diversity and population structure of this fungus we have developed 41 dinucleotide microsatellite markers. A survey of 75 individuals, with nine of these being foreign isolates, has shown these loci to be highly variable with an allelic diversity ranging from 2 to 22. Observed heterozygosity ranged from 0.014 to 0.973 and expected heterozygosity from 0.166 to 0.742. Eleven of the 41 loci were in Hardy-Weinberg equilibrium (P < 0.05). Initial analysis is showing most of the molecular variance is within populations vs. among populations.