Abstract
Abstract The Apple Germplasm Bank (AGB) of Santa Catarina Agricultural Research and Rural Extension Company - Epagri, AGB-Epagri, is the largest of the genus Malus in Brazil. Twenty-eight main accessions of this bank were virus screened through DAS-ELISA, RT-PCR and IC-RT-PCR during two consecutive reproductive cycles, and each accession showed latent mixed infection by at least two species, among ASGV, ASPV and ACLSV. The combined use of diagnostic methods helped overcome inconsistencies commonly found in apple virus detection and was shown essential for the AGB-Epagri can be safely used as a source of genetic variability and for the exchange of virus-free propagative material.
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