Re: PHOTO:TB Brazen Beauty/& close up


The plicata and luminata genes work on the water soluble pigments,
that is the blue/purple anthocyanins. They don't have any effect on
the oil based catenoid pigments, yellow, pink, apricot, peach and
orange. Thus you can't call what you see with the ground pigment a
luminata pattern. 
Check Keith Keppel's on-line posting for Feb 03-2003 on iris-talk for
further clarification.

If you check you will find very many carotene based flowers with this
sort of patterning. That is yellow, apricot, and pink. Most oranges
don't show this patterning as they have a very high concentration of
pigment.

There is a soft yellow pigment ( a flavanoid) which is water soluble
and it may be controlled by the anthocyanin controls eg: plicata,
luminata, amoena etc.

Chuck Chapman







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