North American Fruit Explorers mailing list at ibiblio

[Thomas Olenio <tolenio@sentex.net>]

Hi,

What part of the tree is responsible for dormancy?  Roots or framework, or
the whole tree?  Some part of it must be sending out the hormones that
result in dormancy.

Thanks,
Tom

--


On Wed, 9 Jan 2002, edforest2010 wrote:

> I finally found the Pomona issue and the article on sandwiching, it
> was written by Bernie Nikolai.
> He said that it was in BC, Canada that a felllow, Percyy Wright,
> grafted some super hardy plums onto some peaches (so it wasn't in
> Alaska as I'd thought), then a test winter killed all the peaches that
> weren't grafted to the plums.
> Percy thought that the plums caused the peaches to go dormant earlier
> in the fall. (I wonder why he didn't theorize that it caused them to
> leaf out later in the spring though, or at least why he ruled that
> out)
> Bernie goes on to say that he used the above info to try what I
> believe he termed originally "sandwiching", or grafting a tender
> variety onto a hardy frame and later grafting the tender variety to a
> hardy branch tip, leaving the tender variety "sancwiched" between two
> hardy stocks. He suggests that this might give a tender variety an
> added protection against frost, beyond simply topworking.
> So Bernie, have you had any success with this method?
> The article was in issue XXV, Fall of '94, editor Bob Purvis.
> Kevin B
> PS, I myself have just begun to experiment with this, grafed a peach
> to a hardy plum frame, later to be grafted to plum again. I will try
> this with several peaches and plant them in different zones and see
> how far north peaches might grow. (Sadly, the plum/peach union is
> apparently not usually long lived, but peaches don't live that long
> anyway so, we'll see)
>
>
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