From: "Dr. Guanghua Zhu" <gzhu at lehmann.mobot.org> on 1997.04.09 at 03:48:32(591)
Dear Eduardo,
Tom Croat brough back some Dracontium polyphyllum seeds from Franch
Guiana a couple of years ago for my study. If took a long time, more
than eight weeks, for me to get a few seedlings. You may have to
wait some time longer for Dracontium margaretae. Please keep us
posted on what you will find out.
Guanghua
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> Date: Mon, 7 Apr 1997 20:54:30 -0500
> Reply-to: aroid-l@mobot.org
> From: Eduardo Gomes Goncalves
> To: zhu
> Subject: Re: Pollenation of D. gigas.
> Dear Julius and Hans,
>
> I'm trying to germinate seeds from both Dracontium margaretae and D.
> bogneri. I sowed them 4 weeks ago and nothing happened yet. I think they
> will only germinate in the next growing season (early October), with
> the first rains of our southern spring. It's a very predictable pattern
> here in the Central areas of South America, where the winter is somewhat
> dry and it is not suitable for the growth of seedlings. Maybe time is
> the key factor. I really don't know if such pattern works for species
> from Central America (as D. gigas), but it can be a clue. Probably
> Guanghua can help us...
> Whatever, I'll notice you when mine sprout.
>
> Best wishes,
>
> Eduardo.
>
>
>
>
>
> On Fri, 4 Apr 1997, Julius Boos wrote:
>
> > Dear Hans, I believe that you would have to place pollen from the ELDER of
> > the two infloresences onto the spadix of the YOUNGER as SOON as it opens, as
> > only at this stage is the second [and younger] infloresence at female
> > anthesis. This was my experience with D. asperum, which I sucessfully
> > pollenated and which I produced seed for me some years ago. Development to
> > maturity took aprox. ten months!
> > I wish you luck if you manage to produce seed in germinating them, as none
> > of my seed germinated! The only person that I know of that has germinated
> > Dracontium seed sucessfully is Joep Moonen in Fr. Guiana, so this hints at a
> > need for keeping them quite warm. Good luck!
> > Julius.
> >
> >
>
>
>
Guanghua Zhu
Missouri Botanical Garden
P. O. Box 299
St. Louis, MO 63166-0299, USA
Phone: (314)577-9454
Fax: (314)577-9438
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