At Linda Mann's suggestion, I'm posting the
following photos, even though I believe I posted them all before, some time
ago. This time the purpose is to highlight the discussion we have been
having on getting "red" out of iris pigments, considering how orange-red
Lycopene itself is. The illustration I have used with Linda I repeat
here--Lycopene in the raw is the color of what you wash off your kettles and
pasta bowls when you have a tomato sauce--that orange-red scum that floats on
the dishwater, even if you don't use a heavy detergent.
First, the parents: The cross is R 15,
HAPPENSTANCE x POWER WOMAN
Happenstance (Keppel 2000)
Pink on the peach side of very light
Power Woman (may be introduced 2006)
Royal to plum purple, but lighter, deep violet blue
Yellow pigments are present, particularly in the
heart of the flower and on the shoulders of the fall
From the cross:
R 15-68: Happenstance X Power
The predominant pigment is the anthocyanin of Power
Woman, reduced in dosage by about half.
The carotinoid of both parents is expressed as a
very smoothly distributed pale cream or ivory, giving sutstantially greater
warmth to the anthocyanin, presumably Delphinin. The plant is
probably Tttt, giving further warmth to the ivory or cream and to the final
This is about as close to "pink" an anthocyanin can
appear in TB tetraploids, I believe, although further generations will show
The "Joyce Terry" patterned white and light yellow
is a sibling, # R 15-65.
A following post will illustrate a further question
from our discussions on Iris-talk.
Neil Mogensen z 7 western NC
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