Re: CULT: germination inhibitors
- To: iris-talk
- Subject: Re: CULT: germination inhibitors
- From: l* M*
- Date: Sun, 05 Mar 2000 14:40:20 -0500
From: linda Mann <lmann@mailhub.icx.net>
Patrick Orr asked:
> Does anyone know about the inhibitor well enough to explain why this can or cannot be done. I am sure I am NOT the first one to think about this. So, my question is why hasn't this been invented yet?
>
Patrick, my flippant answer is that hormones are complicated. I'll say
some simplistic things and maybe somebody who really knows something
will give a better explanation. As I understand it, inhibitors in seeds
in general inhibit the production of hormones that start things moving.
They include both physical (seed coats either impermeable to water or
oxygen or both) and chemical inhibitors. Some are simple - reactions
that don't take place until temperatures are suitable. Some are
complicated chains of events - temperature has to go one way to make one
thing happen then another way to make something else happen, and it has
to be for a certain duration, or the whole trick slides backwards
again. Some are light inhibited, some dark inhibited. Lettuce is a
really wacko one - light inhibited at some sequences of temperatures,
and vice versa as I remember. And to make things more complicated, some
of the things that start a cascade of removing inhibitors in some seeds
may create inhibitors in others.
Anyhoo, no single chemical treatment would work for all seeds, and only
certain seeds would respond to any given chemical treatment.
I think Sharon McAllister has written previously about inhibitors of
iris seeds and what it takes to remove them. Fortunately, sitting
outdoors in the dirt from December till spring works well in these parts
Linda Mann, flatlander, east Tennessee USA, great valley of the
Tennessee River, moonshine country, south of Kingston, halfway between
Paint Rock and Midway, gardening a few hundred feet from Stamp Creek,
zone 7/8
Enjoying Walter's signature lines. I got in the habit of typing mine in
when I was on AOL and never have used an automatic signature. I figure
typing my name and where I am takes a lot less time than typing the
message.
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