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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.
Anthurium plowmanii flowers
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From: Al Wootten <awootten at NRAO.EDU> on 1998.10.02 at 02:16:00(2641)
Of the plants I have grown from seed Dewey distributed perhaps two
years ago, I have my first flower. I'll try to take a photo and
post it to the WWW. It has a faint but pleasant scent. Can the
flower be self-pollinated? Any advice on technique woulr be very
welcome.
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Clear skies,
Al
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|Al Wootten, Slacktide, Sturgeon Creek at the Rappahannock|
|Astronomer (http://www.cv.nrao.edu/~awootten/) |
|genealogy homepage http://members.tripod.com/~astral |
|Deltaville, Virginia (804)776-6369 |
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From: Krzysztof Kozminski <kk at netgate.net> on 1998.10.02 at 14:12:37(2642)
Al Wootten wrote:
> Of the plants I have grown from seed Dewey distributed perhaps two
> years ago, I have my first flower. I'll try to take a photo and
> post it to the WWW. It has a faint but pleasant scent. Can the
> flower be self-pollinated? Any advice on technique woulr be very
> welcome.
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I tried to pollinate the one that bloomed for me in the spring (shown in
http://u1.netgate.net/~kk/Araceae/Anthurium/plowmanii.html), but without
success. I wasn't even sure where this beast had female flowers - as can
be seen in the photo, the pollen was produced on the lower portion of
the spadix. Just in case, I smeared it all over the other one, but
nothing took.
Come to think of it - would it be by any chance one of those plants that
change sex with maturity?
======================================
Krzysztof Kozminski
http://u1.netgate.net/~kk/
kk@netgate.net
"Applying computer technology is simply finding the right wrench to
pound in the correct screw."
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From: "Julius Boos" <ju-bo at email.msn.com> on 1998.10.03 at 14:39:19(2646)
>>Of the plants I have grown from seed Dewey distributed perhaps two
years ago, I have my first flower. I'll try to take a photo and
post it to the WWW. It has a faint but pleasant scent. Can the
flower be self-pollinated? Any advice on technique woulr be very
welcome.
| +More |
Clear skies,
Al
+---------------------------------------------------------+
|Al Wootten, Slacktide, Sturgeon Creek at the Rappahannock|
|Astronomer (http://www.cv.nrao.edu/~awootten/) |
|genealogy homepage http://members.tripod.com/~astral |
|Deltaville, Virginia (804)776-6369<< |
+---------------------------------------------------------+
Dear Al,
Some species of Anthurium will produce fruit/seed without another
plant/flower being present (I forget the tech. term for this), but usually
you need a second flower at the right stage to achieve pollenation, and
fruit/seed production. In Anthurium the spadix is at the "female ready"
stage as soon as the spathe begins to, or is open, and you can see/feel
this, as the little "points" along the entire spadix are wet, and covered
with a tiny drop of liquid for the pollen (from another more mature spadix)
to adhere to. After this stage, the "points" turn brown, and the pollen
begins to be produced, starting at the top of the spadix and continuing
downward. This strategy prevents self pollenation, and ensures cross
pollenation.
Hope this helps. Maybe Dewey of Tom Croat can say if your species is one
that will develop fruit/seed without pollenation.
Cheers,
Julius
ju-bo@msn.com
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From: Don Burns <burns at mobot.org> on 1998.10.03 at 15:10:34(2647)
Julius and Al,
The term Julius is searching for is apomixis. I just 'plowed' (could not
resist) through my literature and could not find reference to A.
plowmanii being apomictic. All of mine I grew from seed, and the seed
came from Dewey.
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Don Burns Plantation, FL USA Zone 10b
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From: "Julius Boos" <ju-bo at email.msn.com> on 1998.10.03 at 22:51:09(2651)
Al Wootten wrote:
> Of the plants I have grown from seed Dewey distributed perhaps two
> years ago, I have my first flower. I'll try to take a photo and
> post it to the WWW. It has a faint but pleasant scent. Can the
> flower be self-pollinated? Any advice on technique woulr be very
> welcome.
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>I tried to pollinate the one that bloomed for me in the spring (shown in
http://u1.netgate.net/~kk/Araceae/Anthurium/plowmanii.html), but without
success. I wasn't even sure where this beast had female flowers - as can
be seen in the photo, the pollen was produced on the lower portion of
the spadix. Just in case, I smeared it all over the other one, but
nothing took.<
>>>Come to think of it - would it be by any chance one of those plants that
change sex with maturity?<<<
Dear Krzysztof,
I do not believe so, as the genus Anthurium is one with bisexual flowers
(female and male parts have separate phases, but not all those of the same
sex mature together, and flowering is often prolonged) as opposed to
unisexual flowers, where the female and male flowers are separate, with the
female flowers at the base of the spadix, the male at the upper portion and
usually a sterile portion separating them, usually with a short flowering
period.
I believe the "sex change" has been recorded in the latter group, where
younger plants are male only, and produce pollen, but never develop
fruit/seed, and as plants becom larger, they become "female" (but also
produce pollen).
I have noticed that in some bisexual plants a simular thing MAY be occuring
(but this has not as yet been documented, as far as I am aware) where a
smaller/younger, or even a "sick" plant will sometimes bloom and produce
pollen, but even if that plants bloom is hand pollenated at the correct
phase, the spadix will not develop fruit/seed. It is a strategy that makes
sense, as the small/ sick plant is still able to contribute to the gene
pool, (pollen) but is not large/strong enough to produce the energy needed
for the prolonged fruit/seed production.
Cheers,
Julius
ju-bo@msn.com
======================================
Krzysztof Kozminski
http://u1.netgate.net/~kk/
kk@netgate.net
"Applying computer technology is simply finding the right wrench to
pound in the correct screw."
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From: "Walter V. Turner" <turner at mailgate.urz.uni-wuppertal.de> on 1998.10.05 at 01:04:57(2652)
All this talk about pollen and seeds encourages me to ask about
Dieffenbachia seeds (I have hesitated for months, because you all have such
exotic species).
I have several species of Dieffenbachia, and most have never produced any
pollen. This year, however, several bloomed at the same time and there was
at least some "dust" on the upper end of the spathes. I brushed this
generously over the lower parts of the spathe of the same plants and of some
others of various species.
I have to say, however, that the result looks to be the same as in other
years, when there was no pollen visible: no seeds swell up, the female
flower parts just turn dark brown or black, and the flower wilts and rots.
Inside, as always, the spathe is now coated with gum (not even soap will
wash the stuff off). Is there any chance that the little black things are seed?
I have never seen any pictures or descriptions of Dieffenbachia seed or of
how to raise the plants from seed. Some of the commercial plants are
supposed to be hybrids, so SOMEBODY must be doing it.
Can anyone help?
Walter Turner
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Wuppertal, Germany
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