Re: HYB: ?heredity of orange question(s)
Orange is recessive, but it is a combinaion of two recessive genes. It
has the tangerine factor, which is recessive plus alternative yellow
which is also recessive. So crossing a yellow with tangerine beard X
orange will give you lots of orange offspring, probably 100%
The apricot and peach are slightly different genetically.
I would also suspect they have rra 4times. that is recessive reduction
of anthocyanin, as org X Org usually gives 100% orange, and none with
any anthocyanin. Either that or multiple dosages of "I".
Date: Sat, 03 Jan 2009 11:43:51 -0500
From: Linda Mann <email@example.com>
Subject: [iris] HYB: ?heredity of orange question(s)
Orange is full recessive, true? (no dosage effects that result in
patterns other than self - i.e., orange or not orange?)
Not sure any of you have time/patience to wade thru the following to
'grade' my logic and results, but sure would appreciate any help
15GAK (posted to photos) X AUTUMN RIESLING seedlings are germinating
Athough 15GAK looks sort of pale apricot in the photo, I think it's
likely yellow with a very pale anthocyanin tint on the standards (i.e.,
yellow orangish tan). (I forgot to do a hot water extraction to be
sure). It is I26: white: (white x pink ground variegata or I(s)) X
GACG-5: pale apricot-orange (what's the difference between apricot and
AUTUMN RIESLING is (Schreiner, R. 2006) Sdlg. KK 1242-A. TB, 40" (102
cm), ML S. orange apricot (RHS 24C); F. orange apricot (21C), yellow at
center; beards tangerine. Orange Blossom Special X Status Seeker.
so this cross should give me probabilities of 1 in 36 having full
compliment of genes for orange apricot, tho the color may be hidden
(i.e., recessive white, dominant I(s))?
Unless by some chance of luck, 15GAK turns out to be 3/4
"orange"-pink-yellow, in which case the odds will be 1/6?
Some of those, judging from the pale anthocyanin wash on the falls,
might be apricot ground pastel variegata? Also probability of 1 in 6,
because, in this case, it's a dominant gene? Or 1 in 2 if it carries
more than one I(s)?
And the presence of blue on the falls of 15GAK tells me that either the
pollen or pod parent was full recessive white for anthocyanin?
plus one of them was at least one I(s)?
No wonder most folks make like X like crosses - this gets complicated
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.DiscoverET.org/etis>
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