Re: orange genetics
iris@hort.net
  • Subject: Re: orange genetics
  • From: C* C* <i*@aim.com>
  • Date: Fri, 11 Jan 2013 10:45:54 -0500 (EST)
"Your highest probability of combining genes to get orange will always be crossing seedling back to an orange. Numbers will depend on number of recessives, which is tricky to evaluate.
Getting one orange from many crosses of HOM to an orange actually suggests that HOM is TTTt. This combination can produce TTtt gametes, although rare. As genes are being selected as two from a pool of 8. That is just the way it works with tets (look in "World of iris" for more details) As if HOM is TTtt, then in crosses with pink (or orange) you should be getting 1/4 with tttt. 

Chuck Chapman

-----Original Message-----
From: Betty Wilkerson <autmirislvr@aol.com>
To: iris <iris@hort.net>
Sent: Fri, Jan 11, 2013 9:37 am
Subject: Re: [iris]orange genetics

In the cross I referenced, all of the seedlings appeared to be exactly
the same color, (bright shiny yellow-or the 'Summer Radiance' color)
and my thoughts were that it would take another cross to orange to make
it appear.  With the resulting seedlings being just a hair past three
quarters orange.  My thoughts were that it had SOME orange but not
half--with tons of seedlings needed to bring it out.

Still, you know a lot more about genetics than I do, and I'm happy to
accept your conclusions.

<<I've gotten an orange seedling from HoM X orange,>>


Betty Wilkerson
Zone 6 KY
autmirislvr@aol.com



-----Original Message-----
From: Linda Mann <lmann@lock-net.com>
To: iris <iris@hort.net>
Sent: Thu, Jan 10, 2013 4:57 pm
Subject: Re: [iris]orange genetics


Thanks Betty.  I'm afraid this is one of those things where I struggle
hard to "understand" the math, then have to see it in the garden before
it will give me any kind of working understanding.But your
examples/experiences are always welcome.I've gotten an orange seedling
from HoM X orange, but only one out of a bunch of yellows.  Which
implies HoM is half orange.  I think.  I've also gotten a couple of
tangerine beards from it.  Both were dirty white or cream, I think.
Which means it has to have some of both alternate yellow and pink.  I
think.So if I have this figured out right, I think that means it's both
half pink and half alternate yellow.  But don't hold me to it! ;-)T
bearded whites keep showing up from various crosses, but I'm not ready
to try to understand that just yet.  Maybe I'm supposed to cross them
back to HoM to get alternate yellow with t beards?  Guess I could with
'red hot', which is 15GAK X Decadence.  ding! light bulb.  15GAK is
from [white seedling:(IMM x pink)] X [orange seedling:(GOLDEN APPLE x
CRYSTAL GLITTERS)].  So I think that means that ... oh rats, momentary
glimmer of understanding vanished into thin air.I have a bunch more
seedlings from various combinations of HoM, pink, and orange cooking
along from 2011 seeds, may help me understand this more.  Not counting
on it.  Aging brain isn't able to do this very well any more.Linda
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