No subject

Fri Nov 27 05:16:40 CET 2009

hardy Aroids)" <ARISAEMA-L at NIC.SURFNET.NL> Aroids)" <ARISAEMA-L at NIC.SURFNET.NL>
Sender: "Arisaema Enthusiast Group (AEG) Discussion List (and other=
From: "George R. Stilwell, Jr." <GRSJr at WORLDNET.ATT.NET>
Subject: Re: Seed Germination and "forcing"
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary=3D"=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=====_27730598 4==.ALT"

--=====================_2773059=84==.ALT
Content-Type: text/plain; charset="us-ascii"; format=flowed

>-Jim McClements reports:

>I've had quite a bit of experience inducing seed germination by washing =se=
>eds in a detergent, and germinating them in a damp paper towel, a techni=qu=
>e learned from Ray Stilwell. Check the following entry in the archives.
>
>https://listserv.surfnet.nl/scripts/wa.cgi?A2=ind9802&L=ARISAEMA=-L&P=

On germinating:

See the document available from the Arisaema page:
"Seeds, Dr. Denno, and Me" - Maroni
She describes a variation on the Denno damp towel method of
germinating Arisaema seeds.

I've only used the Denno towel method, and with great success. One
can actually see the progress of root formation followed by shoot formati=on.

Back when I was actively germinating seeds I kept records that allow
one to view not only the % germination but also the rate of
germination and the time required. I can probably dig that stuff up
if there is sufficient interest.

On forcing: By keeping seedling corms at a temperature near 40 deg F
in a slightly moist state (in the refrigerator, in plastic bags with
a damp strip of paper towel) they can be induced into another growth
cycle in 3 months as against a year. By repeating this cycle, the
seedlings can be brought to flowering in 2 to 3 years instead of 5 years.

I have not noticed any ill effects due to the forcing; nor have there
been any reports of such to my knowledge.

I was interested to find that Dr. Blazitch at NC State used a similar
forcing method to speed the development of Sciadopitys verticillata
for  experimental use. The plant only produces one flush per year
(that's why it is so expensive).
The artificial cold periods induced 3 flushes per year.

Of course this requires major equipment as the plants grow because
they don't conveniently go to dormant corms as Arisaema do.

Sorry about the trivia. Got lots more if you have nothing better to do.

Ray

Ray

========================================================================
Search the Arisaema-L archives & subscription options -
http://listserv.surfnet.nl/archives/Arisaema-l.html

Arisaema-L HOME & GALLERY: http://aeg.florapix.nl/

For help with this list, send an e-mail to the listowners at:
Arisaema-L-request at nic.surfnet.nl
========================================================================

--=====================_2773059=84==.ALT
Content-Type: text/html; charset="us-ascii"

<html>
<body>
<blockquote type=cite class=cite cite="">-Jim McClements
reports:</blockquote> 
<blockquote type=cite class=cite cite="">I've had quite a bit of
experience inducing seed germination by washing se= 
eds in a detergent, and germinating them in a damp paper towel, a
techniqu= 
e learned from Ray Stilwell. Check the following entry in the
archives. 
<a href="https://listserv.surfnet.nl/scripts/wa.cgi?A2=ind9802&amp;=L=ARISAEMA-L&amp;P" eudora="autourl">
https://listserv.surfnet.nl/scripts/wa.cgi?A2=ind9802&amp;L=ARISA=EMA-L&amp;P</a>
=</blockquote> 
On germinating: 
See the document available from the Arisaema page: 
&quot;Seeds, Dr. Denno, and Me&quot; - Maroni 
She describes a variation on the Denno damp towel method of germinating
Arisaema seeds. 
I've only used the Denno towel method, and with great success. One can
actually see the progress of root formation followed by shoot
formation. 
Back when I was actively germinating seeds I kept records that allow one
to view not only the % germination but also the rate of germination and
the time required. I can probably dig that stuff up if there is
sufficient interest. 
On forcing: By keeping seedling corms at a temperature near 40 deg
F in a slightly moist state (in the refrigerator, in plastic bags with a
damp strip of paper towel) they can be induced into another growth cycle
in 3 months as against a year. By repeating this cycle, the seedlings can
be brought to flowering in 2 to 3 years instead of 5 years. 
I have not noticed any ill effects due to the forcing; nor have there
been any reports of such to my knowledge. 
I was interested to find that Dr. Blazitch at NC State used a similar
forcing method to speed the development of Sciadopitys
verticillata for&nbsp; experimental use. The plant only produces one
flush per year (that's why it is so expensive). 
The artificial cold periods induced 3 flushes per year. 
Of course this requires major equipment as the plants grow because they
don't conveniently go to dormant corms as Arisaema do. 
Sorry about the trivia. Got lots more if you have nothing better to
do. 
Ray 
 
Ray 
</body>
 
</html>
======================================================================== 
Search the Arisaema-L archives & subscription options - 
http://listserv.surfnet.nl/archives/Arisaema-l.html 
 
Arisaema-L HOME & GALLERY: http://aeg.florapix.nl/ 
 
For help with this list, send an e-mail to the listowners at: 
Arisaema-L-request at nic.surfnet.nl 
========================================================================

--=====================_2773059=84==.ALT--