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Título

Direct and indirect effects of three virus infections on yield and berry composition in grapevine (Vitis vinifera L.) cv. ‘Tempranillo’

AutorMartínez, Lidia; Miranda, Carlos CSIC; Royo, José Bernardo; Urrestarazu, Jorge; Martínez de Toda, F. CSIC ORCID; Balda, Pedro CSIC; Gonzaga Santesteban, Luis
Palabras claveGrape quality
Grapevine leafroll-associated viruses (GLRaVs)
Grapevine fleck virus (GFkV)
Grapevine fanleaf virus (GFLV)
Fecha de publicación22-nov-2016
EditorElsevier
CitaciónScientia Horticulturae 212: 20-28 (2016)
Resumen[Background and aims] Viral diseases in grapevines result in reduced vineyard performance, but it remains unclear to which extent some of their effects are direct or indirect, or if both kinds of effects co-occur. The aim of this work is to evaluate the effect of three virus diseases (GFLV, GLRaV and GFkV) on cv. Tempranillo.
[Methods and results] A wide dataset that comprised yield components and grape composition of 531 cv. Tempranillo accessions for seven years was used, comparing their performance depending on the presence of each virus. GFLV showed the highest deleterious effects, followed by GLRaV-3, whereas GFkV had no effect. GLRaV-3 and, especially, GFLV effects were very relevant.
[Conclusions] Regression analyses demonstrated that GFLV increases soluble solids (TSS) and colour density (CD) independently of yield reduction or advanced ripening, and causes higher pH independently of TSS. Similarly, GLRaV-3 detrimental effect on CD is not caused only by delayed ripening, and higher pH is associated to imbalanced ripening.
[Significance of the study] Our results highlight that a detailed analysis of a wide agronomic dataset allows a better understanding of virus diseases, unveiling to which extent some of their effects are direct or indirect.
Versión del editorhttp://doi.org/10.1016/j.scienta.2016.09.023
URIhttp://hdl.handle.net/10261/146449
DOI10.1016/j.scienta.2016.09.023
Identificadoresissn: 0304-4238
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