[nafex] revisiting interstem

tanis cuff tanistanis at hotmail.com
Mon Jan 28 16:34:38 EST 2013

I sort of recall reading some study about the graft &/or interstem being a gatekeeper of movement of micronutrients or plant hormones, and that is what stunts growth of topwork.  You're correct that I don't recall if the study was conclusive.

How does one go about finding papers on it?  Google & other search engines seem less & less useful for this.

> From: leeareich at gmail.com
> Date: Mon, 28 Jan 2013 16:10:30 -0500
> To: nafex at lists.ibiblio.org
> Subject: Re: [nafex] revisiting interstem
> Nobody has fully explained how dwarfing rootstocks or interstems exert their effect.

> On Jan 28, 2013, at 3:27 PM, tanis cuff wrote:
> Please correct this if wrong. If I remember my botany, some plant nutrients move upwards in the interior part of the stem, while others move downwards in the cambium just under the bark. Both have an effect on the dwarfing of a graft. If you switch the topwork & rootstock cultivars of an interstem combo, you are asking the 'assembly line' to run in the opposite direction. I would like to see side-by-side comparisons, before relying on doing many for expected production.
> >
> > 
> >
> >> From: antonptak at gmail.com
> >> To: nafex at lists.ibiblio.org
> >> Subject: Re: [nafex] revisiting quince - compatibility if reverse scion and rootstock
> >>
> >> One more question on this - I find references to using OHF interstems on
> >> quince to increase compatibility with some pear cultivars. If
> >> compatibility works in one direction, should it not also work in the
> >> reverse? i.e. if OHF pear interstems on quince are compatible, would
> >> not quince grafted onto OHF, or is there some horicultural aspect of
> >> compatibility that does not necessarily permit someone to draw that
> >> conclusion? Alternatively, anyone's personal experience regarding this
> >> would be also be quite interesting.
> >>


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