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IAS Aroid Quasi Forum
About Aroid-L
This is a continuously updated archive of the Aroid-L mailing list in a forum format - not an actual Forum. If you want to post, you will still need to register for the Aroid-L mailing list and send your postings by e-mail for moderation in the normal way.
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variegated
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From: "Michael Marcotrigiano" <mmarcotr at email.smith.edu> on 2004.08.23 at 16:20:48(12041)
For those of you who were asking I decided to sell a few of my
variegated Amorphophallus plants (A. konjac 'Shattered Glass'). There is
one on ebay right now.
| +More | |
_______________________________
Michael Marcotrigiano, Ph.D
Director of the Botanic Garden and Professor of Biological Sciences
Smith College
Lyman Conservatory, 15 College Lane
Northampton, MA 01063
email: mmarcotr@smith.edu
voice: 413-585-2741; fax: 413-585-2744
www.smith.edu/garden
www.science.smith.edu/~mmarcotr
-----------------------------------------------------------------------------------
"Art is the unceasing effort to compete with
the beauty of flowers and never succeeding."
Marc Chagall
|
|
From: Neil Gordon <neil at ng23.abelgratis.co.uk> on 2004.08.23 at 17:08:53(12043)
On 23 Aug 2004, at 17:20, Michael Marcotrigiano wrote:
For those of you who were asking I decided to sell a few of my
variegated Amorphophallus plants (A. konjac 'Shattered Glass'). There
is
one on ebay right now.
Looks like the A Bulbifer leaf I left out in the full sun a few weeks
ago!
| +More | |
(only mines more, er... crispy!)
Quite a few Hewitii seedlings there also, I wonder where they came from
:)
Neil
|
|
From: "Michael Marcotrigiano" <mmarcotr at email.smith.edu> on 2004.08.23 at 17:29:04(12044)
Neil
I guess people like that look. The last one I sold last year went for
475.00. If you take the time to read the web link you will see that they
grow into very stunning variegated leaves - if you don't like
variegation so be it -- but for those who do, this is the aroid holy
grail. I bought a parrot with the profits fromt he last one. One hobby
fuels another.
| +More | |
_______________________________
Michael Marcotrigiano, Ph.D
Director of the Botanic Garden and Professor of Biological Sciences
Smith College
Lyman Conservatory, 15 College Lane
Northampton, MA 01063
email: mmarcotr@smith.edu
voice: 413-585-2741; fax: 413-585-2744
www.smith.edu/garden
www.science.smith.edu/~mmarcotr
-----------------------------------------------------------------------------------
"Art is the unceasing effort to compete with
the beauty of flowers and never succeeding."
Marc Chagall
>>> neil@ng23.abelgratis.co.uk 08/23/04 01:08PM >>>
On 23 Aug 2004, at 17:20, Michael Marcotrigiano wrote:
> For those of you who were asking I decided to sell a few of my
> variegated Amorphophallus plants (A. konjac 'Shattered Glass'). There
> is
> one on ebay right now.
>
Looks like the A Bulbifer leaf I left out in the full sun a few weeks
ago!
(only mines more, er... crispy!)
Quite a few Hewitii seedlings there also, I wonder where they came from
:)
Neil
|
|
From: "Temmerman" <temmerm at skynet.be> on 2004.08.23 at 18:13:33(12045)
Hi,
I do like the look of variegated plants.
But I have a question Michael. You say on ebay that it is not a virus but a
genetic thing. If it is genetic, how do you explain that it is not always
the same, that it varies greatly and that not even all the offsets are
variegated? When I compare with let's say Hosta, then the variegation in
the plants is stabile and always the same. I would rather say that that is
genetic and that yours is a virus?
I am no good when it comes to genetics, so there may well be a perfectly
logical explanation. I was just wondering.
Whatever causes the variegation, I wish it would show up in more of my
plants:-)
| +More |
Regards,
Michael
----- Original Message -----
To:
Sent: Monday, August 23, 2004 7:29 PM
Subject: Re: [aroid-l] variegated
> Neil
>
> I guess people like that look. The last one I sold last year went for
> 475.00. If you take the time to read the web link you will see that they
> grow into very stunning variegated leaves - if you don't like
> variegation so be it -- but for those who do, this is the aroid holy
> grail. I bought a parrot with the profits fromt he last one. One hobby
> fuels another.
>
> _______________________________
>
> Michael Marcotrigiano, Ph.D
> Director of the Botanic Garden and Professor of Biological Sciences
> Smith College
> Lyman Conservatory, 15 College Lane
> Northampton, MA 01063
> email: mmarcotr@smith.edu
> voice: 413-585-2741; fax: 413-585-2744
> www.smith.edu/garden
> www.science.smith.edu/~mmarcotr
> --------------------------------------------------------------------------
---------
> "Art is the unceasing effort to compete with
> the beauty of flowers and never succeeding."
> Marc Chagall
>
> >>> neil@ng23.abelgratis.co.uk 08/23/04 01:08PM >>>
>
> On 23 Aug 2004, at 17:20, Michael Marcotrigiano wrote:
>
> > For those of you who were asking I decided to sell a few of my
> > variegated Amorphophallus plants (A. konjac 'Shattered Glass'). There
>
> > is
> > one on ebay right now.
> >
>
> Looks like the A Bulbifer leaf I left out in the full sun a few weeks
> ago!
> (only mines more, er... crispy!)
>
> Quite a few Hewitii seedlings there also, I wonder where they came from
>
> :)
>
> Neil
>
>
|
|
From: Neil Gordon <neil at ng23.abelgratis.co.uk> on 2004.08.23 at 19:35:29(12046)
I wasnt saying the varigated one looked bad! Just my plant!
Ive seen these before and the big ones look lovely.
Neil
| +More |
On 23 Aug 2004, at 18:29, Michael Marcotrigiano wrote:
Neil
I guess people like that look. The last one I sold last year went for
475.00. If you take the time to read the web link you will see that
they
grow into very stunning variegated leaves - if you don't like
variegation so be it -- but for those who do, this is the aroid holy
grail. I bought a parrot with the profits fromt he last one. One hobby
fuels another.
Looks like the A Bulbifer leaf I left out in the full sun a few weeks
ago!
(only mines more, er... crispy!)
Quite a few Hewitii seedlings there also, I wonder where they came from
:)
Neil
|
|
From: "Nathan Lange" <nelange at concentric.net> on 2004.08.23 at 22:28:42(12048)
The variegation patterns of streaked hostas, often prized for use in hosta
breeding programs, is highly unstable, but not viral.
Something to consider,
Nathan
| +More |
At 08:13 PM 8/23/2004 +0200, you wrote:
Hi,
I do like the look of variegated plants.
But I have a question Michael. You say on ebay that it is not a virus but a
genetic thing. If it is genetic, how do you explain that it is not always
the same, that it varies greatly and that not even all the offsets are
variegated? When I compare with let's say Hosta, then the variegation in
the plants is stabile and always the same. I would rather say that that is
genetic and that yours is a virus?
I am no good when it comes to genetics, so there may well be a perfectly
logical explanation. I was just wondering.
Whatever causes the variegation, I wish it would show up in more of my
plants:-)
Regards,
Michael
----- Original Message -----
To:
Sent: Monday, August 23, 2004 7:29 PM
Subject: Re: [aroid-l] variegated
> Neil
>
> I guess people like that look. The last one I sold last year went for
> 475.00. If you take the time to read the web link you will see that they
> grow into very stunning variegated leaves - if you don't like
> variegation so be it -- but for those who do, this is the aroid holy
> grail. I bought a parrot with the profits fromt he last one. One hobby
> fuels another.
>
> _______________________________
>
> Michael Marcotrigiano, Ph.D
> Director of the Botanic Garden and Professor of Biological Sciences
> Smith College
> Lyman Conservatory, 15 College Lane
> Northampton, MA 01063
> email: mmarcotr@smith.edu
> voice: 413-585-2741; fax: 413-585-2744
> www.smith.edu/garden
> www.science.smith.edu/~mmarcotr
> --------------------------------------------------------------------------
---------
> "Art is the unceasing effort to compete with
> the beauty of flowers and never succeeding."
> Marc Chagall
>
> >>> neil@ng23.abelgratis.co.uk 08/23/04 01:08PM >>>
>
> On 23 Aug 2004, at 17:20, Michael Marcotrigiano wrote:
>
> > For those of you who were asking I decided to sell a few of my
> > variegated Amorphophallus plants (A. konjac 'Shattered Glass'). There
>
> > is
> > one on ebay right now.
> >
>
> Looks like the A Bulbifer leaf I left out in the full sun a few weeks
> ago!
> (only mines more, er... crispy!)
>
> Quite a few Hewitii seedlings there also, I wonder where they came from
>
> :)
>
> Neil
>
>
|
|
From: "Temmerman" <temmerm at skynet.be> on 2004.08.24 at 06:31:16(12052)
Yes, you're right about that. Those hosta used for breeding are not so easy
to find, just like this konjac:-)
But it still is a bit weird to me that something genetic does not happen all
over the plant.
| +More |
Any explanation for that? If not, I guess I'll just have to accept the
facts:-)
Best,
Michael
----- Original Message -----
To:
Sent: Tuesday, August 24, 2004 12:28 AM
Subject: Re: [aroid-l] variegated
>
> The variegation patterns of streaked hostas, often prized for use in hosta
> breeding programs, is highly unstable, but not viral.
>
> Something to consider,
> Nathan
>
>
> At 08:13 PM 8/23/2004 +0200, you wrote:
> >Hi,
> >
> >I do like the look of variegated plants.
> >But I have a question Michael. You say on ebay that it is not a virus
but a
> >genetic thing. If it is genetic, how do you explain that it is not
always
> >the same, that it varies greatly and that not even all the offsets are
> >variegated? When I compare with let's say Hosta, then the variegation in
> >the plants is stabile and always the same. I would rather say that that
is
> >genetic and that yours is a virus?
> >I am no good when it comes to genetics, so there may well be a perfectly
> >logical explanation. I was just wondering.
> >Whatever causes the variegation, I wish it would show up in more of my
> >plants:-)
> >
> >Regards,
> >Michael
> >
> >----- Original Message -----
> >From: "Michael Marcotrigiano"
> >To:
> >Sent: Monday, August 23, 2004 7:29 PM
> >Subject: Re: [aroid-l] variegated
> >
> >
> > > Neil
> > >
> > > I guess people like that look. The last one I sold last year went for
> > > 475.00. If you take the time to read the web link you will see that
they
> > > grow into very stunning variegated leaves - if you don't like
> > > variegation so be it -- but for those who do, this is the aroid holy
> > > grail. I bought a parrot with the profits fromt he last one. One hobby
> > > fuels another.
> > >
> > > _______________________________
> > >
> > > Michael Marcotrigiano, Ph.D
> > > Director of the Botanic Garden and Professor of Biological Sciences
> > > Smith College
> > > Lyman Conservatory, 15 College Lane
> > > Northampton, MA 01063
> > > email: mmarcotr@smith.edu
> > > voice: 413-585-2741; fax: 413-585-2744
> > > www.smith.edu/garden
> > > www.science.smith.edu/~mmarcotr
> >
> --------------------------------------------------------------------------
> >---------
> > > "Art is the unceasing effort to compete with
> > > the beauty of flowers and never succeeding."
> > > Marc Chagall
> > >
> > > >>> neil@ng23.abelgratis.co.uk 08/23/04 01:08PM >>>
> > >
> > > On 23 Aug 2004, at 17:20, Michael Marcotrigiano wrote:
> > >
> > > > For those of you who were asking I decided to sell a few of my
> > > > variegated Amorphophallus plants (A. konjac 'Shattered Glass').
There
> > >
> > > > is
> > > > one on ebay right now.
> > > >
> > >
> > > Looks like the A Bulbifer leaf I left out in the full sun a few weeks
> > > ago!
> > > (only mines more, er... crispy!)
> > >
> > > Quite a few Hewitii seedlings there also, I wonder where they came
from
> > >
> > > :)
> > >
> > > Neil
> > >
> > >
>
>
>
|
|
From: "Michael Marcotrigiano" <mmarcotr at email.smith.edu> on 2004.08.24 at 12:13:06(12053)
It is not a periclinal chimera but rather it appears to be a chlorplast
mutation that has not sorted out to white or green entirely and when it
does you get white or green plants but not variegated ones. I wrote an
extensive review of the control of variegation (HortScience 32: 773-784
(1997). I have reprints. If you send a snail mail address I'll get one
to you.
| +More | |
_______________________________
Michael Marcotrigiano, Ph.D
Director of the Botanic Garden and Professor of Biological Sciences
Smith College
Lyman Conservatory, 15 College Lane
Northampton, MA 01063
email: mmarcotr@smith.edu
voice: 413-585-2741; fax: 413-585-2744
www.smith.edu/garden
www.science.smith.edu/~mmarcotr
-----------------------------------------------------------------------------------
"Art is the unceasing effort to compete with
the beauty of flowers and never succeeding."
Marc Chagall
>>> temmerm@skynet.be 08/23/04 02:13PM >>>
Hi,
I do like the look of variegated plants.
But I have a question Michael. You say on ebay that it is not a virus
but a
genetic thing. If it is genetic, how do you explain that it is not
always
the same, that it varies greatly and that not even all the offsets are
variegated? When I compare with let's say Hosta, then the variegation
in
the plants is stabile and always the same. I would rather say that
that is
genetic and that yours is a virus?
I am no good when it comes to genetics, so there may well be a
perfectly
logical explanation. I was just wondering.
Whatever causes the variegation, I wish it would show up in more of my
plants:-)
Regards,
Michael
----- Original Message -----
To:
Sent: Monday, August 23, 2004 7:29 PM
Subject: Re: [aroid-l] variegated
> Neil
>
> I guess people like that look. The last one I sold last year went
for
> 475.00. If you take the time to read the web link you will see that
they
> grow into very stunning variegated leaves - if you don't like
> variegation so be it -- but for those who do, this is the aroid holy
> grail. I bought a parrot with the profits fromt he last one. One
hobby
> fuels another.
>
> _______________________________
>
> Michael Marcotrigiano, Ph.D
> Director of the Botanic Garden and Professor of Biological Sciences
> Smith College
> Lyman Conservatory, 15 College Lane
> Northampton, MA 01063
> email: mmarcotr@smith.edu
> voice: 413-585-2741; fax: 413-585-2744
> www.smith.edu/garden
> www.science.smith.edu/~mmarcotr
>
--------------------------------------------------------------------------
---------
> "Art is the unceasing effort to compete with
> the beauty of flowers and never succeeding."
> Marc Chagall
>
> >>> neil@ng23.abelgratis.co.uk 08/23/04 01:08PM >>>
>
> On 23 Aug 2004, at 17:20, Michael Marcotrigiano wrote:
>
> > For those of you who were asking I decided to sell a few of my
> > variegated Amorphophallus plants (A. konjac 'Shattered Glass').
There
>
> > is
> > one on ebay right now.
> >
>
> Looks like the A Bulbifer leaf I left out in the full sun a few
weeks
> ago!
> (only mines more, er... crispy!)
>
> Quite a few Hewitii seedlings there also, I wonder where they came
from
>
> :)
>
> Neil
>
>
|
|
From: "Michael Marcotrigiano" <mmarcotr at email.smith.edu> on 2004.08.24 at 19:19:04(12054)
Chloroplasts have their own genes (being derived from bacteria in
evolution) and they divide and occupy cells. When a chloroplast mutates
it can become white and when it divides it is in the cell with other
green ones. Eventually some cells sort out to all green, some all white,
most mixed, giving you a marble pattern. I am NOT sure this is the cause
of variegation in 'shattered glass' but the phenotype of shattered glass
is consistent with this mode of chloroplast inheritance. Until I do
crosses with it I can't unravel it for sure.
| +More | |
_______________________________
Michael Marcotrigiano, Ph.D
Director of the Botanic Garden and Professor of Biological Sciences
Smith College
Lyman Conservatory, 15 College Lane
Northampton, MA 01063
email: mmarcotr@smith.edu
voice: 413-585-2741; fax: 413-585-2744
www.smith.edu/garden
www.science.smith.edu/~mmarcotr
-----------------------------------------------------------------------------------
"Art is the unceasing effort to compete with
the beauty of flowers and never succeeding."
Marc Chagall
>>> temmerm@skynet.be 08/24/04 02:31AM >>>
Yes, you're right about that. Those hosta used for breeding are not so
easy
to find, just like this konjac:-)
But it still is a bit weird to me that something genetic does not
happen all
over the plant.
Any explanation for that? If not, I guess I'll just have to accept
the
facts:-)
Best,
Michael
----- Original Message -----
To:
Sent: Tuesday, August 24, 2004 12:28 AM
Subject: Re: [aroid-l] variegated
>
> The variegation patterns of streaked hostas, often prized for use in
hosta
> breeding programs, is highly unstable, but not viral.
>
> Something to consider,
> Nathan
>
>
> At 08:13 PM 8/23/2004 +0200, you wrote:
> >Hi,
> >
> >I do like the look of variegated plants.
> >But I have a question Michael. You say on ebay that it is not a
virus
but a
> >genetic thing. If it is genetic, how do you explain that it is not
always
> >the same, that it varies greatly and that not even all the offsets
are
> >variegated? When I compare with let's say Hosta, then the
variegation in
> >the plants is stabile and always the same. I would rather say that
that
is
> >genetic and that yours is a virus?
> >I am no good when it comes to genetics, so there may well be a
perfectly
> >logical explanation. I was just wondering.
> >Whatever causes the variegation, I wish it would show up in more of
my
> >plants:-)
> >
> >Regards,
> >Michael
> >
> >----- Original Message -----
> >From: "Michael Marcotrigiano"
> >To:
> >Sent: Monday, August 23, 2004 7:29 PM
> >Subject: Re: [aroid-l] variegated
> >
> >
> > > Neil
> > >
> > > I guess people like that look. The last one I sold last year went
for
> > > 475.00. If you take the time to read the web link you will see
that
they
> > > grow into very stunning variegated leaves - if you don't like
> > > variegation so be it -- but for those who do, this is the aroid
holy
> > > grail. I bought a parrot with the profits fromt he last one. One
hobby
> > > fuels another.
> > >
> > > _______________________________
> > >
> > > Michael Marcotrigiano, Ph.D
> > > Director of the Botanic Garden and Professor of Biological
Sciences
> > > Smith College
> > > Lyman Conservatory, 15 College Lane
> > > Northampton, MA 01063
> > > email: mmarcotr@smith.edu
> > > voice: 413-585-2741; fax: 413-585-2744
> > > www.smith.edu/garden
> > > www.science.smith.edu/~mmarcotr
> >
>
--------------------------------------------------------------------------
> >---------
> > > "Art is the unceasing effort to compete with
> > > the beauty of flowers and never succeeding."
> > > Marc Chagall
> > >
> > > >>> neil@ng23.abelgratis.co.uk 08/23/04 01:08PM >>>
> > >
> > > On 23 Aug 2004, at 17:20, Michael Marcotrigiano wrote:
> > >
> > > > For those of you who were asking I decided to sell a few of my
> > > > variegated Amorphophallus plants (A. konjac 'Shattered
Glass').
There
> > >
> > > > is
> > > > one on ebay right now.
> > > >
> > >
> > > Looks like the A Bulbifer leaf I left out in the full sun a few
weeks
> > > ago!
> > > (only mines more, er... crispy!)
> > >
> > > Quite a few Hewitii seedlings there also, I wonder where they
came
from
> > >
> > > :)
> > >
> > > Neil
> > >
> > >
>
>
>
|
|
From: "Sean A. O'Hara" <sean at support.net> on 2004.08.24 at 19:25:08(12055)
At 11:31 PM 8/23/2004, Temmerman wrote:
But it still is a bit weird to me that something genetic does not happen
all over the plant. Any explanation for that? If not, I guess I'll just
have to accept the facts:-)
Best,
Michael
| +More | |
Hi Michael -
Yes, I know it seems weird until you understand the reasons why. Much has
been written on this topic and someone on this list already offered a
reprint of his own article on the subject.
But to summarize:
Plant chimeras generally result from a mutation in only a portion of the
plant's tissue. This mutation can occur in an entire layer of tissue
(Periclinal), or only a portion of a layer (Mericlinal) or only a portion
of several layers (Sectorial). When it occurs in an entire layer, the
chimera tends to be more stable. In the other two cases, it is unstable -
this is due to where a shoot originates on the stem. If it originates from
an area that is without the mutation, it grows normally; if it originates
from an area with mixed mutant and normal tissue, it will also be mixed; if
it originates from an area of only mutant tissue, it will contain only
mutant tissue. leaf or floral variegation is the most obvious type of
chimera, but others do exist (Harry Lauder's Walking Stick (Corylus
Avellana 'Contorta') is a mix of slow growing and regular tissue, which is
responsible for the contorted growth of this famous plant).
An example of the unstable can be seen in:
http://www.glasshouseworks.com/images/plecvrtv.jpg (Plectranthus verticillatus)
Depending upon where you take of cutting from such a plant, you may get
very different looking plants (variegated a little, a lot, or
non-variegated). Unless one of these shoots happens to produce a
Periclinal chimera (it can happen), the variegation will continue to be
random and unstable.
An example of a stable chimera can be seen in:
http://www.glasshouseworks.com/images/plecmada.jpg (Plectranthus
madagascariensis)
In this common variegate, there is a lack of chlorophyll in the tissue
layer that grows into the leaf edge. I have a 'sport' of this plant in
which the mutation 'switched' into a different layer, creating a plant very
much like this one:
http://www.glasshouseworks.com/images4/plect-lothlorien.jpg (Plec. mad.
'Lothlorien'), which has a green edge and a pale central area. The stems
are also pale because they originate from the same tissue as the central
leaf area. Both of these variegates are relatively stable, but each can
produce odd shoots from time to time.
I hope this helps a bit - it is a complicated but fascinating topic.
Regards,
Seán O.
h o r t u l u s a p t u s - 'a garden suited to its purpose'
Seán A. O'Hara sean@support.net www.hortulusaptus.com
1034A Virginia Street, Berkeley, California 94710-1853, U.S.A.
(ask me about the worldwide Mediterranean gardening discussion group)
|
|
From: George Yao <gcyao at mydestiny.net> on 2004.08.25 at 04:59:52(12058)
Michael,
Let me venture an explanation. Some variegation are chimeral, which means
only some part of the tissue is genetically different. In variegation, the
difference is in the color, so you have patches of normal green and patches
of abnormal color, often yellow or white, side by side. The genetic
variation in chimeras usually cannot be transmitted to an offspring
sexually, however, offsets or pups can often get the same or similar
genetic variations in tissues.
George Yao
| +More |
Metro-Manila
Philippines
At 8/24/2004 02:31 PM, you wrote:
Yes, you're right about that. Those hosta used for breeding are not so easy
to find, just like this konjac:-)
But it still is a bit weird to me that something genetic does not happen all
over the plant.
Any explanation for that? If not, I guess I'll just have to accept the
facts:-)
Best,
Michael
----- Original Message -----
To:
Sent: Tuesday, August 24, 2004 12:28 AM
Subject: Re: [aroid-l] variegated
>
> The variegation patterns of streaked hostas, often prized for use in hosta
> breeding programs, is highly unstable, but not viral.
>
> Something to consider,
> Nathan
>
>
> At 08:13 PM 8/23/2004 +0200, you wrote:
> >Hi,
> >
> >I do like the look of variegated plants.
> >But I have a question Michael. You say on ebay that it is not a virus
but a
> >genetic thing. If it is genetic, how do you explain that it is not
always
> >the same, that it varies greatly and that not even all the offsets are
> >variegated? When I compare with let's say Hosta, then the variegation in
> >the plants is stabile and always the same. I would rather say that that
is
> >genetic and that yours is a virus?
> >I am no good when it comes to genetics, so there may well be a perfectly
> >logical explanation. I was just wondering.
> >Whatever causes the variegation, I wish it would show up in more of my
> >plants:-)
> >
> >Regards,
> >Michael
> >
> >----- Original Message -----
> >From: "Michael Marcotrigiano"
> >To:
> >Sent: Monday, August 23, 2004 7:29 PM
> >Subject: Re: [aroid-l] variegated
> >
> >
> > > Neil
> > >
> > > I guess people like that look. The last one I sold last year went for
> > > 475.00. If you take the time to read the web link you will see that
they
> > > grow into very stunning variegated leaves - if you don't like
> > > variegation so be it -- but for those who do, this is the aroid holy
> > > grail. I bought a parrot with the profits fromt he last one. One hobby
> > > fuels another.
> > >
> > > _______________________________
> > >
> > > Michael Marcotrigiano, Ph.D
> > > Director of the Botanic Garden and Professor of Biological Sciences
> > > Smith College
> > > Lyman Conservatory, 15 College Lane
> > > Northampton, MA 01063
> > > email: mmarcotr@smith.edu
> > > voice: 413-585-2741; fax: 413-585-2744
> > > www.smith.edu/garden
> > > www.science.smith.edu/~mmarcotr
> >
> --------------------------------------------------------------------------
> >---------
> > > "Art is the unceasing effort to compete with
> > > the beauty of flowers and never succeeding."
> > > Marc Chagall
> > >
> > > >>> neil@ng23.abelgratis.co.uk 08/23/04 01:08PM >>>
> > >
> > > On 23 Aug 2004, at 17:20, Michael Marcotrigiano wrote:
> > >
> > > > For those of you who were asking I decided to sell a few of my
> > > > variegated Amorphophallus plants (A. konjac 'Shattered Glass').
There
> > >
> > > > is
> > > > one on ebay right now.
> > > >
> > >
> > > Looks like the A Bulbifer leaf I left out in the full sun a few weeks
> > > ago!
> > > (only mines more, er... crispy!)
> > >
> > > Quite a few Hewitii seedlings there also, I wonder where they came
from
> > >
> > > :)
> > >
> > > Neil
> > >
> > >
>
>
>
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From: "Temmerman" <temmerm at skynet.be> on 2004.08.25 at 06:27:19(12059)
Hi,
Thanks for the very interesting explanation. It all makes more sense now.
Best,
Michael
| +More |
----- Original Message -----
To:
Sent: Tuesday, August 24, 2004 9:25 PM
Subject: Re: [aroid-l] variegated
> At 11:31 PM 8/23/2004, Temmerman wrote:
> >But it still is a bit weird to me that something genetic does not happen
> >all over the plant. Any explanation for that? If not, I guess I'll just
> >have to accept the facts:-)
> >
> >Best,
> >Michael
>
> Hi Michael -
>
> Yes, I know it seems weird until you understand the reasons why. Much has
> been written on this topic and someone on this list already offered a
> reprint of his own article on the subject.
>
> But to summarize:
> Plant chimeras generally result from a mutation in only a portion of the
> plant's tissue. This mutation can occur in an entire layer of tissue
> (Periclinal), or only a portion of a layer (Mericlinal) or only a portion
> of several layers (Sectorial). When it occurs in an entire layer, the
> chimera tends to be more stable. In the other two cases, it is unstable -
> this is due to where a shoot originates on the stem. If it originates
from
> an area that is without the mutation, it grows normally; if it originates
> from an area with mixed mutant and normal tissue, it will also be mixed;
if
> it originates from an area of only mutant tissue, it will contain only
> mutant tissue. leaf or floral variegation is the most obvious type of
> chimera, but others do exist (Harry Lauder's Walking Stick (Corylus
> Avellana 'Contorta') is a mix of slow growing and regular tissue, which is
> responsible for the contorted growth of this famous plant).
>
> An example of the unstable can be seen in:
> http://www.glasshouseworks.com/images/plecvrtv.jpg (Plectranthus
verticillatus)
> Depending upon where you take of cutting from such a plant, you may get
> very different looking plants (variegated a little, a lot, or
> non-variegated). Unless one of these shoots happens to produce a
> Periclinal chimera (it can happen), the variegation will continue to be
> random and unstable.
>
> An example of a stable chimera can be seen in:
> http://www.glasshouseworks.com/images/plecmada.jpg (Plectranthus
> madagascariensis)
> In this common variegate, there is a lack of chlorophyll in the tissue
> layer that grows into the leaf edge. I have a 'sport' of this plant in
> which the mutation 'switched' into a different layer, creating a plant
very
> much like this one:
> http://www.glasshouseworks.com/images4/plect-lothlorien.jpg (Plec. mad.
> 'Lothlorien'), which has a green edge and a pale central area. The stems
> are also pale because they originate from the same tissue as the central
> leaf area. Both of these variegates are relatively stable, but each can
> produce odd shoots from time to time.
>
> I hope this helps a bit - it is a complicated but fascinating topic.
> Regards,
> Seán O.
>
> h o r t u l u s a p t u s - 'a garden suited to its purpose'
> Seán A. O'Hara sean@support.net www.hortulusaptus.com
> 1034A Virginia Street, Berkeley, California 94710-1853, U.S.A.
> (ask me about the worldwide Mediterranean gardening discussion group)
>
>
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