North American Fruit Explorers mailing list at ibiblio

[Michael Dossett <phainopepla@yahoo.com>]

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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