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. Doug +More _________________/\/\/\______________________ 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 On Wed, 24 Jan 2007, Weaver, Bill wrote: I have 'cloned' A. titanum using a relatively new leaflet and "Olivias' Cloning Gel". It is just a weak fertilizer in a gel base of some sort. No hormones. But it seems to work. "Rootone" rooting hormone did almost nothing. Bill Weaver -----Original Message----- [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of Tony Avent Sent: Wednesday, January 24, 2007 09:50 To: Discussion of aroids Subject: Re: [Aroid-l] Leaflet use for tuber production. Julius: We have been experimenting with leaf cuttings on aroids for several years and are working on a formal article with our results with amorphophallus. We have had success within the genera of Amorphophallus, arisaema, pseudodracontium, and pinellia. Tony Avent Plant Delights Nursery @ Juniper Level Botanic Garden 9241 Sauls Road Raleigh, North Carolina 27603 USA Minimum Winter Temps 0-5 F Maximum Summer Temps 95-105F USDA Hardiness Zone 7b email tony@plantdelights.com website http://www.plantdelights.com phone 919 772-4794 fax 919 772-4752 "I consider every plant hardy until I have killed it myself...at least three times" - Avent Julius Boos wrote: Dear Friends, It is well known that in a couple of genera of aroids, the shed or knocked-off leaflets can and will grow into new plants. The two best known examples are the notoriously weedy and invasive Gonotopus boivinii ( I wonder if this is the only species in this five-species genus that does this?), and to a lesser extent its relative, Zamioculcas zamifolia. I am looking for any and all information on how sucessful reproduction or multiplication has been achieved in OTHER genera of aroids by using small cuttings or portions of leaf (like it has been done in Amorphophallus titanum). Information which I need should include the aproximate age/condition of the leaf cutting used, the names of rooting hormones/powder that may have been used to coat the cut ends of the leaflets, and importantly what genera and species of aroid has this method been attempted with, and which were sucessful at acheiving rooting and new tuber/corm formation. etc. I THINK that there has been information published on this, perhaps in a back-issue of our Aroideana, so if possible I also like information on when/where any publications concerning this method have been published. Please contact me off-line if you are more comfortable with that. Thanks a million. Good Growing, Julius ju-bo@msn.com _______________________________________________ Aroid-l mailing list Aroid-l@gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l _______________________________________________ Aroid-l mailing list Aroid-l@gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l _______________________________________________ Aroid-l mailing list Aroid-l@gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l _______________________________________________ Aroid-l mailing list Aroid-l@gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l

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