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Article: Virus-resistant beans on tap as insurance against chocolate pod disease.
- Article from:
- Agricultural Research
- Article date:
- August 1, 2009
- Author:
CopyrightCOPYRIGHT 2009 U.S. Government Printing Office. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Don't let the name fool you. The soybean aphid, Aphis glycines, also likes feeding on snap beans. Adding insult to injury is the pest's transmission of many different types of viruses, including clover yellow vein virus. A strain of this virus, dubbed "C1YVV-WI," is the chief culprit behind chocolate pod, a disease that causes unsightly defects on snap bean pods.
"Snap beans are sold fresh or processed for freezing or canning, so any defects on the pods make them unmarketable," says ARS plant pathologist Richard Larsen.
Prevention is a challenge, because soybean aphids transmit their viral payloads within seconds of feeding. Also, chocolate pod outbreaks ...
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