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On 6/16/2010 05:56, brian lee wrote:
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
wrote:
From: Tony Avent
Subject: Re: [Aroid-l] Aroid leaf regeneration??
To: "'Discussion of aroids'"
Date: Wednesday, June 16, 2010, 10:52 AM
Steve:
We detailed our research on
rooting amorphophallus from leaf cuttings in an article published in
Aroideana, Volume 30, 2007. Pinellia can also be rooted, as can some
tropical arisaema.
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
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href="http://www.plantdelights.com/">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
From:
aroid-l-bounces@www.gizmoworks.com
[mailto:aroid-l-bounces@www.gizmoworks.com] On Behalf Of ExoticRainforest
Sent: Wednesday, June 16, 2010 3:54 PM
To: Discussion of aroids
Subject: [Aroid-l] Aroid leaf regeneration??
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 the result of a bulblet being
formed at the juncture of the blade and the petiole and appears to
happen as a survival form during hostile seasons of the year. From
TGOA: "Regeneration of tubers, leaves and roots from leaf segments
is well known in Zamioculcas zamiifolia and Gonotapus boivinii (Engler
1881, Schubert 1913, Cutter 1962). Isolated entire leaflets of
Zamioculcas and Gonotapus spontaneously develop a basal swelling,
followed by the formation of roots and up to 3 buds, over a 6-9 week
period for Zamioculcas. Leaf regeneration in Gonotapus is more rapid.
The results of experimental manipulation of isolated leaflets grown in
culture show that any part of the compound leaf is capable of
regeneration".
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:
"Leaf tubercles and regeneration. Tubercles regularly
develop at the juncture of leaflet and petiole in Pinellia fernata
(Hansen 1881, Linsbauer 1934, Troll 1939) at the apical end of petiole
in Typhonium bulbiferum (Sriboonma et al. 1994) and at the first and
second order divisions of the leaf of Amorphophallus bulbifer (Troll
1939). Tubercles in Pinella may also form spontaneously along the
petioles or can be induced at the basal part by cutting into segments
(Linsbauer 1934) Tubercles may develop in Typhonium violifolium at
the leaf apex, pale apex and the apex of this sheath (sriboonma et al,
1994)."
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?
I am not trying to "win an argument, I just want to make sure I
understand this growth form as it relates to aroids.
Thanks,
Steve
class="moz-txt-link-abbreviated" target="_blank"
href="http://www.ExoticRainforest.com">www.ExoticRainforest.com
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