Rust alerts

This is the latest Cereal Rust Report for 2013:

Issue 1: New oat crown rust pathotype with virulence for Pc91

New oat crown rust pathotype with virulence for Pc91

A new pathotype of oat crown rust with virulence for the resistance gene Pc91 was isolated from a sample collected
in late 2012 from Queensland. This is the first detection of virulence for Pc91 in Australia since we began
monitoring this resistance gene in the early 1990s. Cultivars Drover and Aladdin are known to carry Pc91: while the
new pathotype is virulent on seedlings of cultivar Drover, it is not able to attack cv. Aladdin presumably due to
additional resistance provided by gene Pc50. Growers of Drover oats should monitor crops regularly for the
presence of crown rust as it is vulnerable to this new pathotype.

Previous Cereal Rust Reports can be accessed at http://sydney.edu.au/agriculture/plant_breeding_institute/cereal_rust/reports_forms.shtml