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Title: Russian wheat aphid biotypic diversity and distribution in the western United States

Author
item Puterka, Gary
item Nicholson, Scott
item BROWN, MIKE - Oklahoma State University
item PEAIRS, FRANK - Colorad0 State University
item HAMMON, BOB - Colorad0 State University
item BYNUM, E - Texas A&M University
item MICHELS, JERRY - Texas A&M University

Submitted to: International Plant Resistance to Insects Workshop Abstracts & Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 3/1/2012
Publication Date: 4/3/2012
Citation: Puterka, G.J., Nicholson, S.J., Brown, M., Peairs, F.B., Hammon, B.M., Bynum, E., Michels, J. 2012. Russian wheat aphid biotypic diversity and distribution in the western United States [abstract]. 20th Biennial International Plant Resistance to Insects Workshop, April 1-4, 2012, Minneapolis, MN. p. 29.

Interpretive Summary:

Technical Abstract: A multi-state survey of Russian wheat aphid biotype composition in wheat was conducted in the spring of 2010 and 2011. Aphid collections from Texas, Colorado, Kansas, Oklahoma, and Utah were evaluated on 9 plant differentials in replicated screening flat experiments under greenhouse conditions. In 2010, RWA could only be located in Texas due to harsh summer and winter conditions. Greater that 90% of the collections were RWA1. In 2011, RWA1 again dominated the RWA biotype complex in Texas and Colorado. Results indicate there has been a major shift of the biotype complex to RWA1. Prior to this study, RWA2 dominated the biotype complex from 2005-2007.