Date: Fri, 25 Feb 2000 23:16:40 +0100 From: "Andreas Wistuba" <andreas@wistuba.com> To: cp@opus.hpl.hp.com Message-Id: <aabcdefg557$foo@default> Subject: AW: Orchid seed germination
This depends on what you call sterile. A culture of the relevant fungus
isolate is still grown under sterile conditions (the vessel is not open and
accessable to all kind of spores). If the meristem with leaf primordia is
used this is in fact a shoot tip culture in strict sense.
Andreas
> -----Urspr\374ngliche Nachricht-----
> Von: cp@opus.hpl.hp.com [mailto:cp@opus.hpl.hp.com]Im Auftrag von Hideka
> Kobayashi
> Gesendet: Freitag, 25. Februar 2000 18:19
> An: Multiple recipients of list
> Betreff: Orchid seed germination
>
>
> I amaware of that nurseries do not propagate but just sow the
> seeds to grow
> the seedlings under sterile conditions are orchids. However, this
> is mainly
> done because orchids can hardly be grown from seeds under non-strile
> conditions.
>
> Andreas,
>
> Sorry, this is not simply right. I know this is off the topic, but I am
> responding to this as an orchid grower. In most of cases, orchids
> need the
> presence of mychorizal fungi, and it is hardly sterile! Probably you were
> thinking in vitro conditions. It is not frequently done, however,
> there is a
> technique to grow mychorizal fungus and orchid seedlings in vitro
> (symbiotic
> germination). Many temperate terrestrial orchids grow much faster by this
> methods.
>
> Other than that, there are other 'meristematic' regions in plants. For
> example, there are some in cambibium, root tips, and etc. In fact
> meristematic region is more than a few cells. Besides, even meristematic
> propagation done in the sense described by you, the leaf
> primodium is used
> instead of just a few cells.
>
>
> Hideka
>
>
>
>
>
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