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I'm not an expert at this but I had several iris do this this spring. My
observations were that it happened to the earlier blooms and I suspected that
our late frost caused it. On every plant that had this disfiguration, it
was the first bloom and the rest were normal. Some of them looked as if the fall
and standard had fused .
----- Original Message -----
Sent: Wednesday, June 18, 2003 8:43
PM
Subject: Re: [iris-photos] Pigment
changes
This is not the type of pigment change i would
normally
associate with a virus. I am not an expert on
such matters, but to me it
looks more like the effect
of a chemical either in the soil or the air. The
fact
that it appears to be localized doesn't eliminate a
soil bourne
chemical change. Certain organic acids can
often intensify blue colorations
or in some case turn
them pink. If your soil contains uneven
distributions
of certain particles it is entirely possible for
some
roots to distribute a different effective chemical to
different
plant parts. one of my favorable school lab
experiments was to divide the
roots of a Coleus (now
Solenostemon) and create a plant with different
colors
alternating up the leaves. Whether this is something
comparable
one can only speculate. of course another
possibility if it was only on
this one fall that a
mutation had occured in the portion of tissue while
it
was developing.
--- Sandra Barss <bardraj@hotmail.com>
wrote:
> I thought it was kinda neat. No this is the only
>
one that has ever done
> that and since no one smokes around them and
no
> tobacco grows around
> here, it would be quite a challenge to
have that
> virus, but maybe something
> similar is
happening.
>
> Sandra
>
>
> >From: "Robert
Dickow" <dickow@uidaho.edu>
> >Reply-To:
iris-photos@yahoogroups.com
> >To:
<iris-photos@yahoogroups.com>
> >Subject: Re: [iris-photos]
Pigment changes
> >Date: Wed, 18 Jun 2003 12:45:25 -0700
>
>
> >Ooo. If your plant does this on all its flowers
>
consistently, I would
> >suspect tobacco mosaic virus.
>
>
> >Nuke the plant from orbit. It's the only way to be
>
sure.
> >
> >Bob Dickow
> >
> >-----
Original Message -----
> >From: "Sandra Barss"
<bardraj@hotmail.com>
> >To:
<iris-photos@yahoogroups.com>
> >Sent: Wednesday, June 18, 2003
2:21 PM
> >Subject: [iris-photos] Pigment changes
>
>
> >
> > > I have never seen this happen
before. This is
> Chubby Cheeks (SDB) with
> > > a
little difference.
> > > What would cause this type of pigment
change ?
> > >
> > > Sandra
> > >
>
> >
> > >
> > >
> > > .
> >
>
> >
>
>
>
>----------------------------------------------------------------------------
>
>----
> >
> >
> > > I have never seen this
happen before. This is
> Chubby Cheeks (SDB) with
>
>a
> >little difference.
> > > What would cause this
type of pigment change ?
> > >
> > > Sandra
>
> >
> > >
> > >
> > >
> >
> .
> > >
> >
> >
>
>
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