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HYB: 201 Homework -- Signals

I processed hundreds of seeds
JUDAH, but kept complete records
on only those that survived the
second selection cycle.

Mortality is high among 1/4-bred
seedlings.  I suspect many would
not even have germinated under
natural planting conditions, but I =

know that some succumbed while
still under lights and others did not
survive their first year in seedling =

beds.  =

In summary, there were enough to
show a wide degree of variation but
there are undoubtedly other strange
combinations that could show up in
a larger sample.

Signal inheritance is quite complex,
so we've pretty much glossed over
that part.  Rather than assign
"homework" on this trait, I'll go =

ahead and share my observations.

This group of seedlings can be
divided into three signal types: solid, =

stippled, and camouflaged.

The solid type was enough rarer than
the stippled one to make me suspect
that there more than one modifier
involved.  As a whole, observations of
these seedlings do not support the =

model of a simple allelic series.  Although
there are some distinctly solid signals
and some markedly stippled ones, they
fall along a continuum so that there
are also some that require close
observation to classify. =

Camouflaged signals came in both
types -- just so little contrast between
signal and fall that it took a close look
to identify the signal.  Those were
quickly culled.  =

The lesson here is that TRIBE OF
JUDAH can pass good signals on
to its offspring, when mated with the =

right TB and SOSTENIQUE does =

allow aril traits to show through so
is worth using with other arilbreds.

Yes.  I've tried both with other partners
and am quite pleased with the results.

More to come....

Sharon McAllister

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