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  RE: [Aroid-l] Leaflet use for tuber production.
From: Douglas Ewing <dewing at u.washington.edu> on 2007.01.25 at 16:48:03(15146)
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.


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