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IAS Aroid Quasi Forum
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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.
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Arisaema Seeds
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From: "Frank & Lara" larafrank at wolpert1.freeserve.co.uk> on 2002.08.26 at 11:35:23(9288)
I have an Arisaema which has set seed this season. As I have only 1 plant of
this species would I be correct in assuming the seeds are hybrid? Or are Ariseamas able to pollinate themselves?
Thanks
Frank Wolpert
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From: "George R. Stilwell, Jr." GRSJr at worldnet.att.net> on 2002.08.26 at 10:17:01(9291)
Frank,
It depends on the species. Most Arisaema are either neuter, male, or female,
but A. flavum, for example, carries both male and female flowers and
will produce seeds all by itself (see my comments in the latest news letter).
Ray Stilwell
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At 12:35 PM 8/26/2002 +0100, you wrote:
>I have an Arisaema which has set seed this season. As I have only 1 plant of
>this species would I be correct in assuming the seeds are hybrid? Or are
Ariseamas able to pollinate themselves?
>
>Thanks
>Frank Wolpert
>
>
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From: ggusman ggusman at ulb.ac.be> on 2002.08.29 at 11:39:18(9314)
> I have an Arisaema which has set seed this season. As I have only 1 plant
> of this species would I be correct in assuming the seeds are hybrid? Or are
> Ariseamas able to pollinate themselves?
> Thanks
> Frank Wolpert
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True or almost true. Most plants - except A. flavum - are unable to
pollinate themselves.
Indeed they are either male or female, or, in bisexual spadices, pollen is
often not ripe at the time ovaries are receptive.
Sometimes, however, a fruit is produced, wich usually doesn't ripe and the
peduncle falls down before berries are getting red. Nevertheless, if berries
seem to ripe and seeds are produced, these use to be sterile.
Sometimes, however, fertile seeds are set, even in purely female spadices
and without crossing (apomixis). It's truly exceptional and I only noticed
that once in more than ten years of observation - I am sure
that, at the time a female spadix was present on a very early flowering
form of Arisaema consanguineum, no other arisaema was in flower in my
garden.
In most cases, in the situation you describe, hybridization can be
suspected.
Guy Gusman
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