From: "StroWi at t-online.de" <StroWi at t-online.de> on 2007.01.25 at 19:32:15(15150)
Doug,
what is the actual size of the leaflet in cm or inch you use?
And what is m eant by several month?
I guess at least 2...... ;-)
It is very impressive that you get tubers of several cm diameter.
How long do they take to grow the first leaf then?
Good propagating,
Bernhard.
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-----Original Message-----
> Date: Thu, 25 Jan 2007 17:48:03 +0100
> Subject: RE: [Aroid-l] Leaflet use for tuber production.
> From: Douglas Ewing
> To: Discussion of aroids
>
> I have been cloning A.titanum via leaflet cuttings for a number of
> years now. I put the piece of leaflet in a miniature greenhouse
> constructed of 2 clear 2 liter pop bottles. I insert the cutting into
> a block of rockwool, or a small pot of peat-based potting soil. I do
> not use rooting hormone applications- I was under the impression that
> this might delay, rather than speed, the development of shoots, since
> they are auxins. Either way, one is interested in getting the leaf
> cutting to produce a shoot ( albeit modified into a tuber) not roots.
> After several months of being closed in this high humidity capsule,
> the leaf turns yellow, then brown, then finally is removed and I find
> a tuber below the media surface that is a couple of centimeters in
> diameter. When setting up this cutting, and periodically as needed, I
> dust the plant with my fungicide of choice- cinnamon powder, the stuff
> you put on your oatmeal. This works remarkably well to reduce fungal
> problems in the high humidity.
>
> Doug
>
> _________________/\/\/\______________________
>
> Doug Ewing, Greenhouse Manager (206) 543-0436
> Department of Biology
> University of Washington
> Box 351800
> 24 Kincaid Hall ( for UPS and FEDEX)
> Seattle, WA 98195-1800
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