Elisa detection of grapevine fleck virus (GFkV)

The association of grapevine fleck virus (GFkV) with fleck symptoms on grapevine was established using Elisa. The results confirmed that GFkV is probably the virus responsible for fleck. Its detection in vines by Elisa was not reliable throughout the vegetative cycle: under our conditions, in Alsace, June-July was found to be the best period for testing.