North American Fruit Explorers mailing list at ibiblio

["Ernest Plutko" <ernestplutko@wiktel.com>]

I put seeds on wet paper towels in closed plastic containers in
refrigerator.  No germination after 3 months.

---- Original Message ----
From: phainopepla@yahoo.com
To: nafex@lists.ibiblio.org
Subject: Re: [NAFEX] Raspberry and blackberry seed
Date: Mon, 30 Jun 2008 09:58:36 -0700 (PDT)

>Ernest,
>
>What did you try?  Germinating raspberry and blackberry seed is not
>too difficult although germination percentages can at times be
>discouragingly low.  The hard seed coat is the biggest limiting
>factor in the germination of the seed.  In our breeding program here
>in Corvallis, we treat seeds in a bath of concentrated sulphuric acid
>before stratification to increase our emergence.  This is not an
>option for most people but good results can be obtained by cleaning
>the seed, drying it thoroughly, and then stratifying in the
>refrigerator.  When I was germinating seed at home I obtained ok
>results by sowing the seed in flats and leaving them out over our
>mild winters but I obtained even better results by putting the seeds
>in a small cup in the refrigerator.  I put enough water in to just
>cover them completely and then I sealed it up to prevent evaporation.
> In ~3-4 months (depends a little on the fridge temp and genotype) I
>could see the seed coats starting
> to split and the root tips beginning to emerge and I then pulled
>them out and put them in an appropriate place to germinate.
>
>Did you try cold stratification?  It might be a little easier to
>pinpoint what to tweak if we knew exactly what you did...
>
>Michael
>
>
>Michael Dossett
>Corvallis, Oregon
>www.Mdossettphoto.com
>phainopepla@yahoo.com
>
>
>--- On Mon, 6/30/08, Ernest Plutko <ernestplutko@wiktel.com> wrote:
>
>> From: Ernest Plutko <ernestplutko@wiktel.com>
>> Subject: [NAFEX] Raspberry and blackberry seed
>> To: nafex@lists.ibiblio.org
>> Date: Monday, June 30, 2008, 9:48 AM
>> I need advice on how to germinate raspberry abd blackberry
>> seeds.  I
>> tried and had no success.
>> 
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>
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