Re: HYB: pigments - Into the Night

(from iris-photos)

I have always loved INTO THE NIGHT too.  Really interesting results!

Do you know whether or not the co-factors that result in black color,
supposedly from aphylla (hope I got all that more or less right), also
result in (more?) yellow pigment?

Or have you done any pigment extractions of black self flowers?  What
about red-blacks vs blue-blacks?

Is the yellow pigment water or oil soluble?

I've been assuming the yellow/pink pigment ground color in some of my
favorite "umbratas" (i.e., LIAISON) has been oil soluble, and that the
blooms are essentially selfs with a dark anthocyanin type 'shadow' on
the falls, and that the yellow/pink ground color group are more or less
variations of I. variegata pigments and pattern.

And I'd also assumed that the white/blue pigment ground color in other
favorites (i.e., INTO THE NIGHT) came from the same pattern, but with
the yellow/pink somehow not expressed in the rims and standards.  Same
pattern as I. variegata, but combined with another pattern.

<This is a flower I have always liked. I did a pigment extraction
analysis of this flowr this year as I had some suspicions which were
confirmed  by the                   analysis. The falls had yellow
pigment in them while the standards didn't. I           also did a
quantitative comparison of anthocyanin pigment in falls
and                  standards. I did this by cutting equal sized pieces
of standards and falls.              The amount of anthocyanin pigment
was almost idemtical, allthough there was a
very slightly more pigment in falls, but a very small difference.
Basically
the falls were darker because the anthocyanin was combined with a yellow

amoena.  I personally suspect the colour of standards is about as dark
as we
can get in iris without a carotene underlay.

Now think of such flowers as 'Local Color'and 'Romantic Evening'  Chuck
Chapman>



--
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.korrnet.org/etis>
American Iris Society web site <http://www.irises.org>
talk archives: <http://www.hort.net/lists/iris-talk/>
photos archives: <http://www.hort.net/lists/iris-photos/>
online R&I <http://www.irisregister.com>

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