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[nafex] auxins/ ethylene/ scions
Brian wrote:
>According to what I've read, the auxin produced in the growing tip of most
>apple trees produces ethylene that translocates to the lower buds on the
>branch preventing growth.
I recently attended a great grafting workshop by Bob Purvis. One point I
remember was to be sure your scion wood is isolated from ethylene producing
fruit, if you store them in the fridge. I had the impression that the
ethelyne would make them break dormancy prematurely (rather then inhibit
it). Does this all mean that ethylene exterior to a branch has the
opposite to ethylene that is interior ? Or could it be that the danger of
ethylene on scionwood is suppression of the buds - thus a poorer success
rate in grafting?
Secondly, does this mean it might be imporant to cut off the tips of all
scionwood before storing? Interesting stuff, Del Z2/3
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