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ARS Home » Plains Area » El Reno, Oklahoma » Oklahoma and Central Plains Agricultural Research Center » Peanut and Small Grains Research Unit » Research » Publications at this Location » Publication #391298

Research Project: Management Strategies for Invasive Aphid Pests of Cereals

Location: Peanut and Small Grains Research Unit

Title: Evaluating the reproductive potential of Rhopalosiphum padi on resistant sources of barley

item PARSONS-GONZALES, MALEA - Oklahoma State University
item Mornhinweg, Dolores - Do
item Armstrong, John - Scott
item HOBACK, W - Oklahoma State University

Submitted to: Entomological Society of America Regional Meeting Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 4/20/2022
Publication Date: 4/20/2022
Citation: Parsons, M., Mornhinweg, D., Armstrong, J.S., Hoback, W. 2022. Evaluating the reproductive potential of Rhopalosiphum padi on resistant sources of barley [abstract]. In proceedings: 70th Annual Meeting of the Southwestern Branch of the Entomological Society of America, Forth Worth, Texas, April 18-20, 2022. Abstract 11-2. p. 30.

Interpretive Summary:

Technical Abstract: The Bird cherry-oat aphid, Rhopalosiphum padi (Linnaeus)(BCOA), infests wheat, barley, and oats within the United States and is a primary vector of barley yellow dwarf virus, the most devastating viral disease of cereal crops. The USDA-ARS, Stillwater, OK has identified barley lines with potential resistance to BCOA. Four lines selected from accessions in the National Small Grains Collection (CI 1969, CI 6493, CI 1128, CI 14305), Russian wheat aphid resistant germplasm STARS 9301B, and a susceptible cultivar, Morex, were evaluated for reproductive potential. Reproductive potential for the BCO was evaluated by counting all nymphs produced by a single female (net reproduction (Ro)), the age of the founding female known as longevity in days (d), and the average number of nymphs produced for each female measured in days (d). Morex, the susceptible entry in this evaluation was significantly higher in female longevity, although was not significantly different from CI 1969 in Ro, or nymphs produced per d. All other lines including CI 14305, CI 6493, CI 1128, and STARS 9301B provided reduced reproductive potential, which is indicative of antibiosis and should be further developed to provide BCO resistant sources of barley.