Re: RE: Re: HYB:Pink:out crosses
- Subject: Re: [iris] RE: Re: HYB:Pink:out crosses
- From: "Neil A Mogensen" n*@charter.net
- Date: Fri, 8 Jul 2005 14:40:27 -0400
- List-archive: <http://www.hort.net/lists/iris/> (Web Archive)
rischapman@netscape.net writes:
<<Crossing a pink to a half pink will give about 1/6 offspring with red
beard, but again this doesn't mean that the flower is pink,>>
"I've had this happen with 2 pinks."--Betty W. in South-central KY Zone 6
Betty, provided that the cross was not contaminated, and you are calling
"pink" any of the progeny that had tangerine beards, this would suggest
there were two different synthesis sequences involved in the formation of
the Lycopene pigment vs. normal yellow.
Or did you mean to exclude the various whites, violets and mud colors from
the "pink" count? A normal "pink" is a combination of yellow potential in
the petal, an inhibitor or a recessive lack of the mauve-to-near blue
Delphinidin (Violanin) pigment, and a range of variations on pink from shell
pink to yellow in the petal. All those being excluded might give as low as
1/6 "pink" in a cross of two pinks, depending on what the genetic make-up of
the parents had been.
In my own experience, a pink X pink cross gives almost 100% pink offspring.
Occasional mauve or violet tones may occur, and even more rarely, a white
with a pink or red beard, but usually all the seedlings are pink.
Keith Keppel's cross that produced HAPPENSTANCE produced two other named
siblings that were violet-pinks, of which VIENNA WALTZ is one. In
evaluating the "t" component of the cross, I've had a habit of calling the
"Vienna Waltz" sort "pink" and ignore the presence of the violet with the
pink, simply because I was interested in the "t," not the compounded
variants from the color.
So I'm not sure I know what you're counting as "pink." I doubt you were
doing what I did, but actually referring to the seedlings that looked "pink"
as such, regardless what the siblings looked like.
There are pink blends with yellow or orange yellow beards that look quite
pink as well. These crossed with a "tttt" pink might give anywhere from
none to 1/6th to 1/2 tangerine-bearded offspring, but some would be the
"Vienna Waltz" type color and others plain blends, either coppery or
yellow-blushed and hafted rose blends.
Neil Mogensen z 7 Reg 4 western NC mountains
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