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Winemaking (rec.crafts.winemaking) Discussion of the process, recipes, tips, techniques and general exchange of lore on the process, methods and history of wine making. Includes traditional grape wines, sparkling wines & champagnes. |
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How is it possible for a grape vine that produced a white grape
somehow mutate to produce a red grape? My friend had a vine that produced a small white grape and now 7 years later the same vine is producing a slightly larger red concord grape. I know it's the same vine because there is only one trunk and it is stretched out over a large pergola. |
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Steve,
Could it be that the original white grape was grafted onto a red (Concord) rootstock? if a shoot came up from below the graft, and the upper white stem died back, it would be as you describe. HTH, mike mtm |
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Are you POSITIVE it is a concord grape? could it just be a red grape?
Is it possible the grape got cross polinated with a red varity? I don't know enough about grapes Genetics, to know which is the dominant, but if red is dominant, and white reccessive, the cross could very likely come up red. just a thought.... On 12 Nov 2003 10:52:39 -0800, (Steve) wrote: >How is it possible for a grape vine that produced a white grape >somehow mutate to produce a red grape? My friend had a vine that >produced a small white grape and now 7 years later the same vine is >producing a slightly larger red concord grape. I know it's the same >vine because there is only one trunk and it is stretched out over a >large pergola. email: dallyn_spam at yahoo dot com please respond in this NG so others can share your wisdom as well! |
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Dave Allyn > wrote in message >. ..
> Are you POSITIVE it is a concord grape? could it just be a red grape? > > Is it possible the grape got cross polinated with a red varity? I > don't know enough about grapes Genetics, to know which is the > dominant, but if red is dominant, and white reccessive, the cross > could very likely come up red. Cross pollination cannot affect this years crop, it only affects the seed and therefore the next generation (coming from that seed) so this particular vine will never see a change in fruit color from cross-pollination. The change is most likely from the graft as Mike MTM points out. |
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Grapes can and do experience what is called bud mutation. A bud on a given
vine can mutate into something "different" than the vine it is on. This is most often observed as a shoot on a vine that has different fruit color, leaf shape, disease resistance, etc. compared to the rest of the vine. It is possible that the red grape is the result of a mutation of the original white. One point of interest is that mutations (also called "sports"), if reproducable by cuttings and shown to be superior in a given trait, can be patented by the discoverer. CHEERS! Aaron "Michael" > wrote in message om... > test > (Steve) wrote in message . com>... > > How is it possible for a grape vine that produced a white grape > > somehow mutate to produce a red grape? My friend had a vine that > > produced a small white grape and now 7 years later the same vine is > > producing a slightly larger red concord grape. I know it's the same > > vine because there is only one trunk and it is stretched out over a > > large pergola. |
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