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HYB: Planning Crosses

From: Sharon McAllister <73372.1745@compuserve.com>

Message text written by Donald Eaves:

Since I am interested more in using the aril family in making 
crosses, I wondered how on earth to make plans.  They tended
to bloom earlier than the TBs so how is one to manage the
aril x TB?   Save pollen from one season to the next?  Or just
plan on making the TB x aril and let the pod parent remain
primarily in the TB category.  

Yes, pollen can be frozen and used the following season.  Or you can
sometimes get pollen from someone who has an earlier bloom season.  

>  There are several less than
1/4 aril cultivars out there.  What is their makeup when/if they
get crossed back to the aril family?  Are they likely to be classed
as 1/4, 1/2, 3/4 etc., but still contain more aril genes?  Or do the
way the genes pair up in the original crosses make them pretty
much the same as any non aril ancestry TB?

Something that computes to less than 1/4 aril by the old quantum system
tends to function as either a 1/4-bred or non-aril, but the only way to
find out which category one falls into is to test it.  I've found that the
relatively infertile 1/4-breds actually produce more seedlings when paired
with tetraploid arils than do the fully fertile TBs -- so certainly would
not discourage experimentation with the less-than-quarterbreds. 

Some of the now-historic ones were described as having signal patches. 
Today, one of these would have to be registered as a TB.  Why not be the
one to shake up the iris world by introducing a TB with a signal? <G>

Sharon McAllister

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