| Dear Steve and All,
Aloha.
I have not done it myself, but, Peter Boyce told me that certain clumping species of Schismatoglottis can be propagated by leaf cuttings. I have no idea if this extends to the whole genus, but, perhaps Peter will respond. This conversation arose due to the habit of certain Schismatoglottis that pup and the mother plant dies. While I am on this forum, I'd love to see more species of Schismatoglottis in cultivation. It is like Philodendron and Anthurium...large genera, but relatively few species in cultivation. Unfortunately, this is not likely to change in the near future.
Aloha,
Leland --- On Wed, 6/16/10, Tony Avent <tony@plantdelights.com> wrote:
From: Tony Avent <tony@plantdelights.com>
Subject: Re: [Aroid-l] Aroid leaf regeneration??
To: "'Discussion of aroids'" <aroid-l@www.gizmoworks..com>
Date: Wednesday, June 16, 2010, 10:52 AM
=0A=0A =0A =0A =0A Steve: =0A =0A We detailed our research on rooting amorphophallus from leaf =0Acuttings in an article published in Aroideana, Volume 30, 2007. Pinellia can =0Aalso be rooted, as can some tropical arisaema. =0A =0A Tony Avent
Plant Delights Nursery =0A@
Juniper Level Botanic Garden
9241 Sauls Road
Raleigh, North =0ACarolina 27603 USA
Minimum Winter Temps 0-5 F
Maximum Summer =0ATemps 95-105F
USDA Hardiness Zone 7b
email tony@plantdelights.com
website =0Ahttp://www.plantdelights.com
phone =0A919 772-4794
fax 919 772-4752
"I consider every plant hardy until I =0Ahave killed it myself...at least three times" - Avent =0A =0A=0A I am again doing some digging as a result of an =0Aongoing discussion with a group of growers. It is the opinion of some that =0Aaroids can be induced to generate a totally new plant by placing growth hormone =0Aon the petiole of a leaf. I have read all I can find and do not believe =0Athis information to be accurate.
From the text of The =0AGenera of Araceae it appears the only two aroids that are capable of the =0Aregeneration of a new plant from a leaf are Zamioculcas zamiifolia and =0AGonotapus boivinii. This unique ability is the result of a bulblet =0Abeing formed at the juncture of the blade and the petiole and appears to happen =0Aas a survival form during hostile seasons of the year. From =0ATGOA: "Regeneration of tubers, leaves and roots from leaf segments is well =0Aknown in Zamioculcas zamiifolia and Gonotapus boivinii (Engler 1881, Schubert =0A1913, Cutter 1962). Isolated entire leaflets of Zamioculcas and Gonotapus =0Aspontaneously develop a basal swelling, followed by the formation of roots and =0Aup to 3 buds, over a 6-9 week period for Zamioculcas. Leaf regeneration in =0AGonotapus is more rapid. The results of experimental manipulation of isolated =0Aleaflets grown in culture show that any part of the compound leaf is capable of =0Aregeneration".O ne gentleman appears to be insisting any =0Aof the other four Gonotapus species is capable of the same thing. I =0Ahave read and reread the section in TGOA on this subject and there is a mention =0Aof a few other aroids that produce bulblets at the juncture of the leaf and =0Apetiole but other Gonotapus are not mentioned. More from =0ATGOA:
"Leaf tubercles and regeneration. Tubercles regularly =0Adevelop at the juncture of leaflet and petiole in Pinellia fernata (Hansen 1881, =0ALinsbauer 1934, Troll 1939) at the apical end of petiole in Typhonium bulbiferum =0A(Sriboonma et al. 1994) and at the first and second order divisions of the leaf =0Aof Amorphophallus bulbifer (Troll 1939). Tubercles in Pinella may also =0Aform spontaneously along the petioles or can be induced at the basal part by =0Acutting into segments (Linsbauer 1934) Tubercles may develop in Typhonium =0Aviolifolium at the leaf apex, pale apex and the apex of this sheath =0A(sriboonma et al, 1994)."
Do any of =0Athe other four species of Gonotapus actually do leaf regeneration? =0AAnd if not, can any of our scientists give me a source of documentation as =0Ato why leaf regeneration does not happen in aroids? If any grower =0Ahas obsserved this behavior, can you document it?
I am not trying to "win =0Aan argument, I just want to make sure I understand this growth form as it =0Arelates to aroids.
Thanks,
Steve
www.ExoticRainforest.com
=0A
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