|
On 6/16/2010 03:52, Tony Avent wrote:
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 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
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
href="http://www.ExoticRainforest.com">www.ExoticRainforest.com
_______________________________________________
Aroid-L mailing list
Aroid-L@www.gizmoworks.com
http://www.gizmoworks.com/mailman/listinfo/aroid-l
--------------040402040302040209060405 | 
IAS on Facebook
IAS on Instagram
