Abstract

GONZALEZ TORRES, Rebeca; GONZALEZ SEGNANA, Luis R.; ARIAS, Osmar René  and  RAMIREZ, María Bernarda. Aphid vectors of barley yellow dwarf (BYDV) virus in wheat crop in Paraguay. Investig. Agrar. [online]. 2021, vol.23, n.1, pp.28-31. ISSN 2305-0683.  https://doi.org/10.18004/investig.agrar.2021.junio.2301678.

The Barley yellow dwarf virus or Barley Yellow Dwarf Virus (BYDV) is one of the aphid-borne diseases present in many wheat-producing regions of the world, causing significant losses. Identifying the species that transmit the disease is very important, in order to management tactics and to avoid its spread. The object of this study is to identify BYDV-transmitting aphid species in wheat crops in the areas of highest production in Paraguay; Alto Paraná, Itapúa, Caaguazú and San Pedro. The research was carried out from the start of the seedling emergence to the final stage of wheat cultivation, which ranged from May to October 2014. The insects were captured weekly in each of the selected plots in Moericke-type traps. The data were subjected to fauna analysis. Five species of aphids were identified: Rhopalosiphum padi, Rhopalosiphum maidis, Sitobion avenae, Schizaphis graminum, Rhopalosiphum rufiabdominalis, all identified species are considered virus transmitters.

Keywords : Wheat; Barleyyellowdwarf virus; aphid.

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