Location: Plant Science Research
Project Number: 6070-22000-017-03-S
Project Type: Non-Assistance Cooperative Agreement
Start Date: Apr 15, 2010
End Date: Sep 30, 2014
The objective of the cooperative research between Virginia Tech University and the USDA Agricultural Research Service is to evaluate, identify, and develop sources of resistance to stem rust in wheat and barley.
Virginia Tech University will identify and obtain sources of stem rust resistance in cooperation with the USDA/ARS Plant Science Research Unit (PSRU), Barley CAP participants, and other collaborating breeding programs. These sources of resistance will be used as parents in the breeding program to introgress stem rust resistance into advanced breeding lines of winter wheat and barley. Top and/or backcrosses to adapted elite lines will be made to develop desirable segregating populations. When available molecular markers for known sources of stem rust resistance will be used to characterize parental lines and in marker assisted transfer and selection of resistance. Segregating populations developed from the introgressions will be inbred and advanced using traditional and/or marker assisted breeding methods when markers are available. Pure lines selected from advance breeding populations will be genotyped using available molecular markers and phenotypes for reaction to stem rust will be obtained in cooperative disease screening experiments conducted in field, greenhouse and/or growth chamber trials. Elite lines having stem rust resistance will be evaluated in regional and uniform yield nurseries, and superior lines will be released as cultivars. Data and germplasm will be shared between ARS, Virginia Tech, and other collaborating scientists.