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6 July 2017 Resistance of Select Winter Wheat (Triticum aestivum) Cultivars to Rhopalosiphum padi (Hemiptera: Aphididae)
John Girvin, R. Jeff Whitworth, Lina Maria Aguirre Rojas, C. Michael Smith
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Abstract

The bird cherry-oat aphid (Rhopalosiphum padi L.) is a global pest of wheat and vectors some of the most damaging strains of barley yellow dwarf virus (BYDV). In years of heavy R. padi infestation, R. padi and BYDV together reduce wheat yields by 30–40% in Kansas and other states of the U.S. Great Plains wheat production area. Cultivation of wheat cultivars resistant to R. padi can greatly reduce production costs and mitigate R. padi–BYDV yield losses, and increase producer profits. This study identified cultivars of hard red and soft white winter wheat with R. padi resistance that suppress R. padi populations or tolerate the effects of R. padi feeding damage. ‘Pioneer (S) 25R40,' ‘MFA (S) 2248,' ‘Pioneer (S) 25R77,' and ‘Limagrain LCS Mint' significantly reduced R. padi populations. MFA (S) 2248, Pioneer (S) 25R40, and ‘Limagrain LS Wizard’ exhibited tolerance expressed as significantly greater aboveground biomass. These findings are significant in that they have identified wheat cultivars currently available to producers, enabling the immediate improvement of tactics to manage R. padi and BYDV in heavily infested areas. Secondarily, these results identify cultivars that are good candidates for use in breeding and genetic analyses of arthropod resistance genes in wheat.

© The Authors 2017. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com
John Girvin, R. Jeff Whitworth, Lina Maria Aguirre Rojas, and C. Michael Smith "Resistance of Select Winter Wheat (Triticum aestivum) Cultivars to Rhopalosiphum padi (Hemiptera: Aphididae)," Journal of Economic Entomology 110(4), 1886-1889, (6 July 2017). https://doi.org/10.1093/jee/tox164
Received: 24 April 2017; Accepted: 22 May 2017; Published: 6 July 2017
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