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re: Re: HYB: breeding strategies (was OT-BIO: Tom Waters)

Hi Linda!

Thanks for your interest in my site. I think you will not have to worry 
about chromosome issues in your reblooming work, since I believe you are 
using just TBs for this line. (It doesn't matter that a particular gene 
might have come from a dwarf in the remote past, just that the plants you 
are actually using are TBs.)

Your program should do well without too much worry of the pitfalls of 
inbreeding, since you have a large pool of different "beauty" irises from 
different breeding lines to start with, and reasonable diversity in the 
strong rebloomers too. My inclination would be to cross the beauties with 
the rebloomers, and save both the strongest rebloomers and the most 
beautiful ones from each cross. Then you can cross the beauties from one 
cross with the best rebloomers from another, giving a good chance of 
getting the desired genes together without things becoming incestuous. ;)

All the best, Tom

Tom Waters   

Telperion Oasis ~ www.telp.com/irises    

Cuyamungue, New Mexico, USA  

-------- Original Message --------
> From: "Linda Mann" <lmann@lock-net.com>
> Sent: Tuesday, October 25, 2011 7:15 AM
> To: iris@hort.net
> Subject: [iris] Re: HYB: breeding strategies (was OT-BIO: Tom Waters)
> Tom, I especially enjoyed your article on breeding strategies.  Esp line 

> breeding vs back crossing to achieve particular goals.  Too soon to tell 

> which approach is going to work best for me to get the 'GBK' 
> (Ghio/Blyth/Keppel) 'beauty' genes combined with rebloom.
> Esp if (as I suspect) some of the rebloom sets of genes (the ones that 
> can rebloom in my climate) are acting as amphidiploid combinations from 
> dwarf species.  Some of them may have crossed chromosomes with TBs by 
> now, acting as tets, but it seems like getting rebloom from rebloom x 
> rebloom should be easier if there aren't amphidiploid  issues.
> I barely know what I'm talking about in the above... thinking out loud.
> <There's more about my iris interests on my website
> http://www.telp.com/irises/>
> Linda Mann east TN USA zone 7
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