Resumo

GONZALEZ SEGNANA, Luis Roberto et al. Incidence of barley yellow dwarf virus (BYDV) in wheat (Triticum spp) in the southern region of Paraguay. Investig. Agrar. [online]. 2015, vol.17, n.1, pp.60-64. ISSN 2305-0683.  https://doi.org/10.18004/investig.agrar.2015.junio.60-64.

Barley yellow dwarf virus (BYDV) is widely distributed in the world, affecting various Poaceae and being transmitted by different species of aphids. Monitoring by ELISA tests on samplings during the 2013 and 2014 agricultural year were carried out to determine the predominant serotypes in wheat crops in the southern region of Paraguay, in the districts of Fram, Obligado, Bella Vista and Capitan Miranda. During the agricultural period 2014 Moericke type traps were set up to identify and quantify aphid populations present during crop development. The results showed a wide distribution of BYDV-PAV strain in the samples analyzed but only one positive case for BYDV-MAV strain and no CYDV-RPV strain was detected. The aphid population samplings showed that the most abundant species was Rhopalosiphum padi L., proving its high efficiency in the transmission of PAV serotype.

Palavras-chave : BYDV; Virus; Wheat; Aphids.

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