----- Original Message -----
From:
S*@exoticrainforest.com
To: aroid-l@gizmoworks.com
Sent: Thursday, November 19, 2009 5:00
PM
Subject: [Aroid-l] Alocasia
Amazonica
I realize due to my mail a few are tired of this subject
so I'm about to wrap it up. I do believe some that are interested in
tissue culture and how it affects the plants we grow might find these notes
from Denis Rotolante interesting.
Another very interesting event
this week was the USDA elected to change the information on its website to no
longer indicate Alocasia x amazonica should be credited to André:
http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?312551
If
someone that reads Aroid l had anything to do with that I would like to give
you my thanks.
I am in hopes we can at the very least soon have
a page on the IAS website which explains how all the commonly held
misconceptions regarding Alocasia Amazonica evolved and give credit to
Salvadore Mauro for his creation.
Steve
www.ExoticRainforest.com
Denis Rotolante
wrote:
I have on good sources that the parents of
Alocasia x Amazonica were A. watsoniana and A. sanderiana. However,
since lowii Grandis, lowii Veitchii, Watsoniana and longiloba have all been
reclassified by taxonomists as one swarm all belonging to the species
Alocasia longiloba, the parentage should be Alocasia
longiloba and sanderiana. It does not make a difference unless you
are trying to remake the hybrid.
I was growing Alocasia x Amazonica back in the 1980's
from tissue cultured liners. One of the plants exhibited new characteristics;
heavier leaf substance, shorter petioles, better shipping qualities and slower
growth than the standard plants. It was a sport from the standard Amazonica
type created by genetic changes in Tissue Culture, I called
Polly. Scott Hyndman insisted I give a piece to him to put in
culture. The rest is history. It became the standard of excellence in
alocasias for many years. It's still hard to beat although the value has been
degraded by the fact that it was over produced by chinese labs that flooded
the market with knock offs.
I'm not sure by todays rules of nomenclature that it
can be called Alocasia Amazonica as something happened in the lab
spontaneously to change the genetic make up of the original plant. I would
leave that to someone else to figure out. I just call it
Polly.
From a separate
email:
.most people do not understand
that TC forces changes in the genetic makeup of plants just as sexual
reproduction. when TC does it we see a lot more of the bad ones because they
survive long enough to mature. When nature does it... the deleterious changes
in the genes do not survive, only the favorable ones make it to reproduce
into the next generation.. If you could see the number of bad genetic results
from TC that have resulted in disaster...entire crops of defective plants in
the foliage industry have been produced. Sometimes however a positive change
occurs giving us a Poly.
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