Re:HYB:Glaciatas/green pigment

--- In iris-talk@egroups.com, Chuck Chapman <irischapman@n...> wrote:
> Glaciatas are a fascinating topic. I have put together a slide 
program on
> plicatas, including luminatas and glaciatas. I presented this to 
the Rochester
> group several weeks ago. I have introduced two glaciata SDBs. A 
white "Eramosa
> Snowball" and a green glaciata "Limesicle". As far as I know this 
is the only
> green glaciata in exsistance. Glaciatas are very recessive as they 
are a
> recessive of a recessive. To use their genes properly you need to 
cross to a
> plicata. Crossing to a luminata will usually produce some 
glaciatas. It
> doesn't change the colours of the pigments but is a removal of the 
violet/blue
> pigments, especially the haft markings. Thus the colours remaining 
are
> cleaner. This also shows the green pigment to be in the cell sap, 
either a
> variation on the yellow pigment or chlorophyll, or a combination of
> chlorophyll and yellow. I'm currently speculating that it is a 
variation of
> the yellow pigment (Carotenine) rather then a combination involving
> chlorophyll or being chlorophyll. The shade of green doesn't look 
like
> chlorophyll to me as it is too much towards the yellow. If it was a 
mix the
> colour wouldn't likely be as even or as smooth as it is. I beleive 
that I
> posted a photo of Limesicle on iris-photos in the spring. 
> Crossing a glaciata to a non plicata would be like crossing a 
plicata to a non
> plicata, except even worse. You would then have to work very hard 
at bring
> plicata back in and even harder to bring glaciata back in. Even 
when you
> finished you would likely be exactly where you were to start with. 
An
> interesting project would be to get the green glaciata Limesicle, 
crossed to a
> tangerine factor(lypocene) plicata to see what happens to the green 
when it is
> combined with or replaced with tangerine. If it is chlorophyll 
based then it
> would combine to produce a ?darker pink? or a new shade (shades)to 
work with. 
> 
> 
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