From:
n*@charter.net
To: i*@yahoogroups.com
Sent: Friday, January 23, 2004 9:58
AM
Subject: [iris-photos] Re: Glaciata
Paul Hill's quoting Keith Keppel's remarks in one
of last year's *Bulletins* is definitive in my understanding,
although my experience of or with glaciatas is mostly confined to TB's.
I have and enjoy two of Keppel's SDB's that are glaciatas, but at casual
glance, one would never know they were such.
That's not true with TB glaciatas. For me
at least, they are obvious from across the garden. There's something
about the clarity or quality of the color that just announces itself "Glaciata
Here!." Pulling down--or off--a fall makes the identification
certain. Those whisker marks that are *always* present in ordinary
clones, no matter how clean the hafts, are simply not there.
How the carotinoid pigments are distributed or
patterned is simply a different question. They have nothing to do with
defining or illustrating the "glaciata" status of the flower.
Glaciatas are at the extreme end of the plicata
allelic series but *can* emerge from apparently non-plicata parents. An
awful lot of iris out there do carry plicata recessives and can pop up in the
most unexpected crosses. Whenever this has happened in my seedlings the
plicata pattern has always been dull, the flower full of faults and so
on. Once or twice I made half-hearted pollenizations with them, or kept
a seedling for a year, but ended up discarding them all. Good plics come
from good plics, and very rarely from stray segregates from other
lines.
A marvelous contridiction to the above is
AMERICAN CLASSIC. The pod parent, Y 491-1, is a plicata "pop up" out of
the Schreiner orchid line and the pollen parent is mostly Schreiner purples
except for Rococo in the great-grandparent generation. One would
abruptly stiffen up in astonishment at the pedigree if it were not realized
how widely the "pl" recessive series is to be found.
It is of interest to note that some Keppel
plicatas have some similar bloodlines involved as contained in Y
491-1.
Neil Mogensen z 7 western
NC
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