During this time of the year the vines have a number of active enzymes which can be separated by electrophoresis into characteristic isozyme bands. Samples consist of two or three patches of bark and underlying cambial tissue approximately one half inch by one inch in size. The patches are removed from the rootstock portion of the vine below the graft union and above the soil line. After removal from the trunk, the patches are immediately placed into airtight vials with a piece of moist paper towel. Samples should be kept chilled after collection and during shipment or delivery to the lab.
Verbal results are available within ten business days after receipt of samples.
A full written report follows within an additional three business days. We will also FAX results upon request. If you have any questions about sample collection, or would prefer to have samples collected by us, please contact us .