Date: Fri, 22 Jan 1999 15:26:02 +0000 From: schlauer@chemie.uni-wuerzburg.de To: cp@opus.hpl.hp.com Message-Id: <aabcdefg190$foo@default> Subject: Re: Utricularia pollination and in-vitro propagation
Dear Loyd,
> Was this the seed I sent you some years ago?
Maybe. I received seeds from various people.
> If you would
> like to get some more in cultivation I may be able to help
> in several weeks time.
TNX, but I do not need more.
> I have never managed to generate seed on my U.alpina plant
> which flowers regularly - this 'clone' does not appear to
> form pollen. I understand that this plant was originally
> from in-vitro and that other plants of U.alpina will quite
> happily set seed.
It could equally well be growing conditions, effects of a particular
clone, etc. The factors affecting seed fertility in Lentibulariaceae
are, as I mentioned in my previous mail, essentially unknown.
> Is there any possibility of the hormones
> etc in the growth media interfering with the plants
> biochemistry effectively making it sterile?
I am not able to exclude this possibility, but _U. alpina_ as well as
a whole lot of other species can be grown successfully without the
addition of any hormones.
> There are other
> reports of in-vitro plants 'going wrong' in the UK -
> Pinguicula which constantly divide but never flower, others
> which do not know what time of year it is and form winter
> rosettes in mid summer.
This is entirely normal in vitro.
>. I would be interested to know
> whether these observations are purely anecdotal or whether
> in-vitro cultivation can lead to subsequent problems when
> the plants are unflasked.
Both legend and truth seem to be involved here.
Kind regards
Jan
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