Source: University of Sydney - Plant Breeding Institute, Cereal Rust Laboratory

Cereal Rust Report
Season 2006

A New Pathotype of Wheat Stripe Rust With Implications for the VPM Resistance
by Colin Wellings*
The University of Sydney, Plant Breeding Institute
*(on secondment from NSW Department of Primary Industries)
Email: colinw@camden.usyd.edu.au, Phone: 02-9351 8826

A new pathotype of Puccinia striiformis f.sp. tritici (the pathogen of wheat stripe rust) with virulence for Yr17 has recently been confirmed in greenhouse tests. Isolates of this new pathotype have been recovered in low frequency from southern New South Wales and Victoria in 2006. The Yr17 resistance has been very effective to date in protecting varieties carrying the gene, and so this new pathotype can be expected to have some impact on these lines.

Full report: http://www.seedquest.com/News/releases/2006/pdf/17941.pdf

Source:
Professor Robert F. Park
GRDC Chair of Cereal Rust Research
University of Sydney
Plant Breeding Institute Cobbitty