Re: HYB: Complementary White Carotenoid Genes in SDB

 Blyth works both RRA and DRA (I) with his TBs and SDBs as evidenced by the results Dan posted 

and an examination of the parentage. To sort out which is which you need to examine parentage. 

He mixes up these lines for his special effects.





Chuck Chapman







Date: Sun, 12 Nov 2006 11:02:07 -0500

From: Linda Mann <lmann@lock-net.com>

Subject: [iris] Re: HYB: Complementary White Carotenoid Genes in SDB



Thanks for reposting here Chuck.  Archives for the photos group are 

still not working.



Although it's a race with my aging brain, more and more of this stuff is 

a little easier for me to remember/understand.



I had to refresh my memory on the meaning of RRA & found this post in 

the archives from our departed friend Neil.



> ......Irises like this are

> "dominant whites" which in TWOI are discussed under "RRA"--flowers with

> reduced anthocyanin for any one of several different reasons.



Could you say a little more about Blyth's RRA work?  Were you referring 

to their SDBs or to TBs as well?  I'm trying to incorporate genes from 

their TBs into my tough rebloom lines, especially those yummy 'umbrata' 

combinations.  Have they worked mostly with one type of reduced 

anthocyanin or all kinds or is there any generalization you'd care to 

make?



They sure have come out with some different colors - hard to believe the 

primary/only anthocyanidin is delphinidin in all of the petals with any 

blue tint.



> Blyth works a lot with RRA







- -- 

Linda Mann east Tennessee USA zone 7/8



   
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