Re: [Aroid-l] Aroid leaf regeneration??

From: ExoticRainforest <Steve at ExoticRainforest.com> on 2010.06.16 at 21:35:01 Thanks Steve.  I recall hearing that from Cathy herself sometime along the way.  I am just seeking answers and if anyone has successfully done it I would like to see the subject discussed.  Before I "quote" something I do my best to find it in one of our texts and since I have a ton of aroid papers in PDF format ran the word regeneration and a few other variations threw these files several times.  About the only thing I found of significance were the quotes I used. Anyone, please feel free to contribute.  There are lots of things we as growers can do together to help advance our science. I tried the experiment with Zamioculcas a few years ago and finally got a leaf to root but it was not a fast process. Steve www.ExoticRainforest.com On 6/16/2010 03:21, Steve Marak wrote: Steve, I hope (and expect) others to quickly chime in on this thread, but I have often propagated various Amorphophallus from leaf cuttings, as have a number of others. Kathy Upton and I had some discussion about this many years ago, I think on Aroid-L, but I've not checked the archives. Even with my fairly negligent approach, I had pretty good results, and Kathy - whose technique is much better - was even able to root A. titanum reliably. This is not from an entire leaf, of course, only a segment of a leaf, but there was no "stem" involved (as in how we typically propagate Philodendron or the other vining genera), and I assume that's what you mean. As with Gonatopus, if the segment roots, a small tuber will form at the base of the leaf segment. I have not tried rooting leaves or leaf segments of other aroid genera, but wouldn't really be surprised to succeed with some. We should probably run some tests. The remarkable thing about Gonatopus boivinii, to me, is not just that a single leaflet will produce a new plant, but that almost every one roots without any special care, in almost any kind of environment from semi-aquatic to fairly arid, and that they can apparently defy gravity, because I find them in the strangest places. Steve On Wed, 16 Jun 2010, ExoticRainforest wrote: I am again doing some digging as a result of an ongoing discussion with a group of growers.  It is the opinion of some that aroids can be induced to generate a totally new plant by placing growth hormone on the petiole of a leaf.  I have read all I can find and do not believe this information to be accurate.  From the text of The Genera of Araceae it appears the only two aroids that are capable of the regeneration of a new plant from a leaf are Zamioculcas zamiifolia and Gonotapus boivinii.  This unique ability is ... One gentleman appears to be insisting any of the other four Gonotapus species is capable of the same thing.  I have read and reread the section in TGOA on this subject and there is a mention of a few other aroids that produce bulblets at the juncture of the leaf and petiole but other Gonotapus are not mentioned. More from TGOA: ... Do any of the other four species of Gonotapus actually do leaf regeneration?  And if not, can any of our scientists give me a source of documentation as to  why leaf regeneration does not happen in aroids?  If any grower has obsserved this behavior, can you document it? -- Steve Marak -- samarak@gizmoworks.com _______________________________________________ Aroid-L mailing list Aroid-L@www.gizmoworks.com http://www.gizmoworks.com/mailman/listinfo/aroid-l --------------030007050604090400040507

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