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Host Range of Rust Isolates on Oregano and Mint in Florida

C. M. Stiles and P. A. Rayside

April 2006

Research

Urediniospores were collected from oregano and spearmint in Gainesville, FL. Morphology was consistent with Puccinia menthae. Spearmint, peppermint, oregano, sweet marjoram, and Greek oregano were inoculated with urediniospore suspensions of each rust isolate. Rust developed on oregano, sweet marjoram, and Greek oregano when inoculated with urediniospores from the oregano plant. Rust developed on spearmint when inoculated with urediniospores from the mint plant. This is the first report of P. menthae on oregano in Florida.

doi:10.1094/PHP-2006-0417-01-RS

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