Re: Re: HYB: backcrosses, etc...
- Subject: Re: [iris-talk] Re: HYB: backcrosses, etc...
- From: d*@aol.com
- Date: Fri, 18 Oct 2002 11:04:45 EDT
In a message dated 10/18/02 10:22:39 AM Eastern Daylight Time,
s_j_mahlberg@yahoo.com writes:
> What I need to know is where I can find out which iris are which at least
> with the ancestors? Where is this info available? thanks,
>
Steve,
I. pallida and I. variegata are diploids. I. Mesopotamica is a tetraploid.
This information is contained in the AIS publication The World of Irises,
available online from the AIS Storefront. All recognized species (as of
1978) are listed with their respective chromosome counts. For TBs a count of
24 is a diploid; a count of 48 is a tetraploid.
There is a chapter telling about the development of modern tetraploids.
There are chapters discussing the early hybridizing programs in various color
patterns. Anyone seriously interested in hybridizing should have this book. I
don't know of any definitive list of chromosome counts of named irises, but
anything introduced from the 1940s to the present are most certainly
tetraploids. If parentages are given in registrations for the older irises,
you may be able to trace back to the species. Hope this helps.
Dorothy Willott in Northern Ohio, Zones 5/6
[Non-text portions of this message have been removed]
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