Re: HYB: seed ripening & temperature?

Linda,

I am ever-admiring of your scientific experiments.  Please keep us 
advised.  I think my own experiments will be more limited this year.  
And the crosses that are most important to me will follow your last 
year's burritos method.

Patricia Brooks
Whidbey Island, WA, zone 8/9



--- In iris-talk@y..., Linda Mann <lmann@v...> wrote:
> <Simply my oppinion, but I've always believed the temp does have
> everything  to do with dormancy. Linda, I think you feel the same 
way.
> Donna in NC>
> 
> Until this year, I had way too little experience to have any 
thoughts or
> feelings on the matter, but based on my tiny bit of experience and 
the
> little bit I've read here & elsewhere, I'm starting to agree.  A 
very
> brief period of too hot and I think they may pack it up till better
> times seem more reliable.  Data - seeds pots in the shade where it
> doesn't suddenly heat up for a day or two have given me better
> germination than those with partial sun (but of course, other things
> were going on than just temperature); last winter, seeds were
> germinating indoors until I let them get pretty warm one day - then 
they
> stopped; optimal temperature reported for TBs is quite cool 
compared to
> usual ambient during the growing season; I've never seen TB seeds
> germinate in the fall, yet they apparently do in areas where 
summers are
> not as hot as  here.
> 
> Bill, I dont' think anybody is suggesting that white seeds would
> germinate - all the folks who have suggested planting fresh/"green"
> seeds have said to wait till the pod splits by which time the seed 
coats
> will be tan and plump, not white.  If the seeds (seedcoats) are 
white,
> most folks have said the seeds are too immature to germinate.
> 
> If the seed coat of plump tan seeds from freshly split pods is 
removed,
> the inner seed is white for a day or so - is that what you meant?  
If
> left to dry naturally, the outer seed coat shrivels, becomes tough 
and
> dry, and is a darker reddish tan (or sometimes black from mold etc).
> 
> I've tried planting them every way I can think of - seed coats 
intact,
> fresh seed coats partially & fully removed when inner seed lining is
> white or as well as some a few days later when it's turned black.   
So
> far, nothing has come up - oldest were planted on July 13.
> 
> Some are also in the refrigerator.  Some of the ones in smaller cell
> paks outdoors will go back into the fridge for a few weeks after 
they've
> cooked outdoors for a couple of weeks.  Some of the ones in the 
fridge
> for a few months will go outdoors once soil temperatures drop below
> 60oF.
> --
> Linda Mann east Tennessee USA zone 7/8
> American Iris Society web site <http://www.irises.org>
> iris-talk/Mallorn archives: <http://www.hort.net/lists/iris-talk/>
> iris-photos/Mallorn archives: <http://www.hort.net/lists/iris-
photos/>


 

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