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Soybean germplasm evaluations give US a head start against soybean rust pathogen
Date:4/4/2011

t takes time to transfer a piece of DNA that has a useful gene into a breeding line or cultivar adapted to the United States, then breed long enough to get rid of the undesirable genes that are linked to the useful one. We are trying to isolate the resistance genes without the undesirable genes from the same chromosome."

Currently, two cultivars are being grown in Brazil that have rust resistance, he said. Several more are under development.

"If soybean rust becomes more of a problem in the United States, we have a head start on it," Walker said. "We already have resistance in improved genetic backgrounds, so it can now be transferred more quickly into the top cultivars at any particular time."

In addition to developing rust-resistant breeding lines that are agronomically competitive, and would therefore be useful to both public- and private-sector breeders, Walker said they are interested in mapping rust resistance genes and other useful genes that are segregated in the same populations.


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Contact: Jennifer Shike
jshike@illinois.edu
217-244-0888
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Source:Eurekalert  

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