Selection of mild virus strains of fanleaf degeneration by comparative field performance of infected grapevines

Authors

  • R. Legin
  • P. Bass
  • L. Etienne
  • M. Fuchs

DOI:

https://doi.org/10.5073/vitis.1993.32.103-110

Keywords:

fanleaf degeneration, GFLV, ArMV, grapevine infection, field performance analysis, mild strain, cross-protection

Abstract

Healthy clones of Vitis vinifera L. cultivars Klevener de Heiligenstein, Chardonnay and Pinot noir were graft-inoculated with one clone of the rootstock Kober 5BB infected with potential mild strains of arabis mosaic virus (ArMV-Ta) or grapevine fanleaf virus (GFLV-CB844 or -F13). Such infected vines were planted in a nematode-free replant site and screened for comparative field performance on pruning weight, crop yield, bunch weight, and sugar content over a 5-year period. ArMV-Ta had the mildest impact on both vigor and yield for all three V. vinifera cultivars tested. The impact of ArMV-Ta, along with the other two GFLV strains, was much less evident during the last two years of the trial. Based on these results, ArMV-Ta was selected as a potential mild strain for cross-protection to control fanleaf degeneration. Our field trial also showed that field performance of infected vines was not affected by the vein mosaic virus-like disease.

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Published

2015-09-02

Issue

Vol. 32 No. 2 (1993): Vitis

Section

Article

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