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Re: RE: Chucks explainations

  • Subject: Re: [iris-photos] RE: Chucks explainations
  • From: "Margie Valenzuela" IrisLady@comcast.net
  • Date: Fri, 4 Feb 2005 06:50:34 -0700

Very interesting - - not only does it explain the light blue washed with the 
light/white rim, but what to call the pattern as well. Thanks Chuck.

Margie V.
Oro Valley, AZ.
Zone 8/9

----- Original Message ----- 
From: "irischap" <irischapman@netscape.net>
To: <iris-photos@yahoogroups.com>
Sent: Thursday, February 03, 2005 9:28 AM
Subject: [iris-photos]

> I've sent this about 4 times. Hopefully it will go this time
> Some information of note follows. This was published after the World
> of Iris was published   so probably got ignored. Dr. Henderson was a
> Biology profesor who puzzled over pigments and patterns for over 30
> years. The spot theory was also proposed by Walter Welch and he had
> some good test data to back what he was saying.
> Chuck Chapman
> Henderson, Norland "Color-Patterns in the Tall-Bearded Iris" BAIS #241
> April 1981
> "Iris variegata, a light yellow iris species from Europe has maroon
> veining on the falls that spreads in some forms to produce a maroon
> spot covering the entire blade except for a narrow yellow margin. This
> spot of deep blue-violet is an overlay since it is restricted to the
> cells of the upper epidermis. It was discovered that this dominant
> deep blue-violet could also be added to a recessive white or a light
> blue-violet flower. If the ground color is white , the flower has
> white standards and deep blue-violet falls with a white margin. If the
> ground color is light blue, the standards are light blue-violet and
> the falls are deeper blue-violet with a lighter margin. This
> particular pattern carries its own concentration of pigment and does
> not alter the other pigments that might be present at all. However, if
> an iris carrying this   gene is crossed to an inhibited white, the
> spot will also be inhibited and thus will not appear. Since this gene
> came from I. variagata , it should be designated the "Variegata-pattern.""
> Chuck Chapman
> __________________________________________________________________
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