Re: Follow-up about diploid X tetraploid crosses

Sounds interesting, Tom.  Let's hope you beak the germination barrier with
one or more successful plants.  --  Griff

----- Original Message -----
From: "thomas silvers" <tesilvers@yahoo.com>
To: "iris-talk" <iris@hort.net>
Sent: Wednesday, December 28, 2005 3:15 PM
Subject: [iris] Follow-up about diploid X tetraploid crosses


> I was just checking refrigerated seeds (in damp paper
> towel burritos) and noticed that one of the four seeds
> from 'Honorabile' X 'Muskoka Sunset' has germinated
> and has a root about an inch long. Guess I shoulda
> been checking them more frequently. I've planted it
> anyway, so wish me luck.
>
> By the way, my "Honorabile" is a found iris, so may be
> mis-identified but I'm pretty sure it is 'Honorabile'.
> It is a very infertile, old variegata type. Some day
> I'll have to order 'Honorabile' from a reputable
> source and compare the two. I've only ever gotten
> seeds from it once before (just a few seeds from Iris
> suaveolens var. mellita pollen) and those didn't
> germinate. I've tried several fertile diploids' pollen
> on it and had no takes at all. So on a whim, this past
> summer, I pollinated several dozen blooms with (orange
> tetraploid) 'Muskoka Sunset' pollen. Almost all the
> pods aborted promptly, but a few held on longer than
> the rest. Finally, only one pod remained at maturity.
> It had four seeds (one of which is very
> underdeveloped).
>
> I'm especially excited about this seedling (hoping
> that it survives) for two reasons.
>
> 1)because 'Honorabile' is so uncooperative as a
> breeder at all
> 2)because diploid X tetraploid crosses aren't the
> easiest either, and this seedling could be the source
> of a welcome infusion of "fresh blood" into the
> tetraploid gene pool
>
> Tom
> Just $16.99/mo. or less.
> dsl.yahoo.com
>
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