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Re: Analysis of MV's sedlings absence ofabsence of carotene and anthocyanin in #9

  • Subject: Re: [iris-photos] Analysis of MV's sedlings absence ofabsence of carotene and anthocyanin in #9
  • From: "James Ennenga" jrennenga@outdrs.net
  • Date: Mon, 17 Jan 2005 09:11:35 -0500

Hi Margie,
Thanks to Robin, I have now looked at all of your seedlings  Some look great. Do any of them rebloom?
----- Original Message -----
Sent: Monday, January 17, 2005 3:54 AM
Subject: [iris-photos] Analysis of MV's sedlings absence ofabsence of carotene and anthocyanin in #9

First, thanks to both Chuck and Margie.  This is a great cross to analyze.   Thank you so much for sharing the seedlings Margie, and thanks for spending the time to break it down for us Chuck.
I gathered that not everyone has the photos saved, so I threw together a page so you can scroll down and see the seedlings all on one page.  It will probably load slowly because I found that reducing the photo size greatly altered the quality. Here's the link : http://www.irises.homestead.com/margiesseedlings.html
Well, for what its worth, I'm going to try and sort through this.   Seedling #9 has both a reduction of anthocyanin and carotene for the most part.  From reading TWOI, it looks like several different locis must be involved.  Since neither parent is white, the dominant I would not be present in either parent (though I sub s is.) That would leave it as one of the recessive white loci since it does not look like a glaciata.    That would lead me to believe that w sub 1 and w sub 2 are involved.   The color in the veins does appear to have some anthocyanin (TWOI p 401), so it is possible that both parents are
W sub 1, w sub 1, w sub , w sub 1 or  possibly one  W sub 1, W sub1, w sub , w sub1.
As to the Carotene inheritance, there is much less info in TWOI.  It could be any one of the y sub 1,2 or 3.  Because the y sub 1 info indicates that only the hafts have carotene, I would guess that y sub 1 might be involved.  I'm going to have to think on this with a clearer head before tossing out any more guesses.  Its getting too late.
Robin Shadlow
zone 5 NE

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