Re: HYB: SDB and IB fertility question

From: "Mike Sutton" <suttons@lightspeed.net>

Hi Chad,
We have been working with fertile IBs for a few years now.  I don't know the
chromosome count.  So far we have some 3/4 TBs and 3/4 SDBs along with the
next generation SDBs (my math isn't that good to figure out the percentage).
We are attempting exactly what you thought, trying to bring TB qualities
down to SDBs.  Stinger is technically an IB but you are right it was
introduced based on its height.  We have a few babies from it crossed by
some SDBs, nothing good yet but we will keep trying.  I believe there is a
gentleman in France who is working on the same lines.  He has introduced a
SA SDB this year (OUTRAGE) and a SA MDB (PUNK).  I just found his letter,
his name is Lawrence Ransom.  We are going to get a few of these and see how
they do, at the moment he only sells in France.
Mike

-----Original Message-----
From: Chad Schroter <Chad.Schroter@quantum.com>
To: Iris Talk List <iris-talk@onelist.com>
Date: Wednesday, August 26, 1998 11:05 AM
Subject: [iris-talk] HYB: SDB and IB fertility question


>From: Chad Schroter <Chad.Schroter@quantum.com>
>
>I have an iris called STINGER which is registered as a horned SDB. It's
>parentage is unusual in that one parent (MUCHACHA) is from SDB lines and
the
>other (EGYPTIAN) is from TB lines. The result is normally registered as an
>IB and has chromosomes 12/12/12/8 as a result. I assume that STINGER was
>registered as an SDB because it meets the height and flower size
>requirements.
>
>According to the WOI, IB's are of limited fertility, in particular the
>pollen is not potent. I know that STINGER will set pods, as I have seen
them
>in another garden.
>
>If STINGER is crossed with SDB's what will the result be in terms of
>Chromosomes/fertility ?  Are these results possible:
>12/12/12/8 x 12/12/8/8 ->  12/12/8/8 (normal SDB),  12/8/12/8 (???),
>12/12/12/8 (normal IB)
>
>Another question - If IB types can be crossed with SDB's and yield some
>SDB's  would this be a good way to transfer TB color patterns etc into SDB
>lines ?
>
>Chad Schroter Email: Chad.Schroter@qntm.com
>
>
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