HYB: REB: genetics

Sharon, I have been sitting in front of the AC & fan between chain sawing and stacking bits and pieces of trees, trying to draw theoretical punnett squares for rebloom and need more dimensions than my poor aging brain can manage!
I've tried various theoretical combinations of dominants, recessives and dosages for one and two different kinds of "rebloom" genes, but can't handle combining <that> with 4 to 6 more sets of genes for rapid growth, pH sensitivity, daylength, night-time temperature regime etc etc.
Chuck, have you already done some of this and come up with some testable probabilities? Anybody know if Don Spoon has?
Is there software or does someone already have a spreadsheet set up that will calculate the probabilities?
The only data I have any good numbers for is that IMMORTALITY X CELEBRATION SONG cross, & the cross doesn't shed a lot of light.
IMM is a summer bloomer here (but not in Canada). CSONG is a sporadic rebloomer here and there. Out of maybe 80 seedlings that survived to transplant size from two different years of making the cross, about 50? survived to bloom. Of those, only two are reliable cycle rebloomers (reliable if they don't get frozen), one tried to bloom in winter once.
I have very few seedlings from most other <individual> crosses involving IMM (or VIOLET MIRACLE, or TEA LEAVES (summer bloomers here), or HARVEST OF MEMORIES (cycle bloomer)), so nothing too useful for calculating probabilities.
From the little data I do have, it looks like half sib crosses of non-reblooming IMM offspring have about one chance in 36 of reblooming....not to mention all the other qualities I want.
Is this where the issue of growing 10,000 seedlings to get one of what we want comes into play? 

Groan....
I know, it's bloom season elsewhere, not the time to be asking this kind of complicated question. 
--
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.DiscoverET.org/etis>
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