korolkowii-breds

Tom Tadfor Little wrote:

:  There were some korolkowii/bearded hybrids registered and introduced (the
:  arilbred dwarf FALLEN LEAF comes to mind), but I can't for the life of me
:  think of any currently available arilbreds with strong korolkowii ancestry
:  and appearance.

:  Sharon?

There are many with some korolkowii ancestry & some korolkowii traits -- but I
can't think of any with korolkowii color, pattern, AND form that are readily
available.  OYEZ (pictured on the AIS 75th anniversary bulletin cover alongside
the "mystery arilbred" we've been discussing) comes the closest.   It has the
veined pattern, but not the form, of its I. korolkowii grandparent.  Most of the
korolkowii genes that have entered today's arilbred gene pool have come through
RCs many generations back.  

For those seeking korolkowii-like garden subjects:  FALLEN LEAF was probably the
most like korolkowii in appearance of the arilbred dwarfs;  MISS MARTHA and RED
KOROL clearly showed their korolkowii ancestry. But I don't know whether any of
these are still available.  

:  [I. korolkowii is so distinctive that it might be worthwhile to make a
:  program of crossing it with TBs. Although the offspring would likely be
:  sterile triploids, some might be attractive and gardenable enough to be
:  worth keeping.]

Yes -- except that I prefer to think of such triploids as "limitedly fertile"
rather than "sterile".   It may take hundreds of crosses using one of them to
get even a single seedling -- but sometimes that one seedling is the needed
breakthrough.  This is what John Holden dubbed "The Triploid Route" and it's a
proven, effective way to introduce new genes into the fertile lines.  Two
half-korolkowii amphidiploids have been counted:  ARDRUN and KOROLCYP.  Two more
have shown enough fertility in test crosses to be suspected amphidiploids: MISS
MARTHA  and RED RAPPORT.  I'd also suggest crossing I. korolkowii with diploids
to get diploid halfbreds.  Also limitedly fertile, but by reputation better
garden subjects than the aforementioned triploids.

Please remember -- you ASKED for this!   As it happens, korolkowii-breds were
one of those experiments I researched in some depth, but didn't have the growing
conditions to adequately explore.  So I'm going to include the complete lists I
compiled of arilbreds that are 1/4 or more I. korolkowii, which I thought would
be useful for such experiments if they could be found.   In each case, the
fraction corresponds to the old quantum system because this is the type of cross
for which the chromosome-set code can't be readily determined.

Each of the following had a korolkowii parent:
BELLORIO
BRUKOR
CARMELO
CONSCIENCE
EMERALD FANTASY -- a triploid 3/4-bred
FALLEN LEAF -- counted 31-chromosome triploid
HANELORE 
HOE DOWN 
KOROLCYP -- counted amphidiploid
KOVIAR 
McLEOD
MISS MARTHA  -- probably amphidiploid
MORERA -- a triploid 3/4-bred
PLUM CUTE
RASPBERRY
RED KOROL -- a triploid 3/4-bred
RED RAPPORT  -- probably amphidiploid
SALEROSA
SMIDGIN 
SNOW PUP
SOCRATES

Each of the following had a korolkowii grandparent:
ALINDA
ARDRUN -- counted amphidiploid.
BABY BLUE
OPEN SESAME -- a triploid 3/4-bred

I think there's a good chance that the list of half-korolkowii introductions is
complete, but there are undoubtedly other varieties with korolkowii
grandparents.  Nominations, anyone?  


Sharon McAllister
73372.1745@compuserve.com
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