Re: HYB: tangerine factor
- Subject: [iris-photos] Re: HYB: tangerine factor
- From: &* A* M* <n*@charter.net>
- Date: Sun, 17 Oct 2004 08:50:44 -0400
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I'm looking forward to seeing your Lycopene
extraction photos, Chuck.
When you do find that name of the other pigment,
I'd be quite interested. I would not be surprised if it were one
of the redder anthocyanins--but that would not jibe well with where you observe
the pigment in your extraction sequence.
Rick Ernst's hope of getting a really red iris from
Lycopene alone does not sound very promising from what both you and Linda
are finding on the pigment extractions. Lycopene alone isn't red
enough. A hot orange iris from Lycopene intensification would have a lot
of garden interest, but wouldn't be the red hoped for, from the sounds of
things.
Really red irises seem more likely from the scarlet
to red Pelargonidin pigments if we can get them into bearded irises. I
would think some work on DNA transfers from Gladiolus a productive--but quite
expensive--potential for true reds. Identifying the relevant enzymes that
give the 4' hydroxyl - only on the flavylium core's B-ring of anthocyanins
is the main thing lacking. Glads have it, irises don't. Of course,
the combination of sugars on the A double-ring matter too, but less than the
number of -OH radicals on the flav. core.
Even dropping one of the three -OH radicals,
especially the one at 5', would move us up the ladder toward
red.
Neil Mogensen z 7 western NC
mountains
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