Wild rose seed germination

Maarten van Helden Maarten.vanhelden at medew.ento.wau.nl
Thu Apr 20 02:17:10 EST 1995


In article <3mugu6$9tf at urvile.MSUS.EDU>, jacksp01 at tigger.stcloud.msus.edu says...
>
>
>i
>I am a graduate student at St. Cloud State University in Minnesota
>I also own a business which grows native plant species and restores
>native plant communities. Currently there are several native plant 
>species which are difficult to germinate. Rosa arkansana, wild prairie
>rose is one such species. It typically takes our greenhouse grower two
>growing seasons to germinate wild roses from seed. She has tried scarifying
>the seed with sandpaper. She has tried acid treating the seed with sulfuric
>acid. She has tried seeding freshly collected seed and overwintering outside
>She has tried seeding two year old seed. So far the same result is always
>achieved it takes two growing seasons from the time the seed is put in the
>ground, until the time the seed germinates. I would like to develop an 
>experimental plan, which will test methods of speeding up the germination
>process. If someone out there has done similar research, I would welcome
>your feed back, good or bad. Please respond @ jackp01 at tigger.stcloud.msus.edu
>Paul Jackson

-- 

Well, I harvested seeds from a wild rose here in holland (rosa canina). Seeds 
looked very hard and woody to me. I harvested and dried the fully developed and 
very soft rose hips for about two weeks and then seeded them in sandy soil. Placed 
them in a cold frame over the winter (some frost up to -10 celsius, but only for 
short periods, nothing permanent) with regular watering. After one winter they all 
germinated. Seeds that where stored in the fridge for the same period did not 
germinate. So some combination og vernalisation and rotting of the woody skin 
seemed to work.
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||\\  //||  Maarten van Helden
|| \\// ||  Dept. of Entomology
||  \/  ||  Wageningen Agricultural University
||||||||||  Binnenhaven 7, 6709 PD
||      ||  Wageningen, the Netherlands
||      ||  Tel +31-8370-85118 Fax +31-8370-84821
||      ||  Email: <maarten.vanhelden at medew.ento.wau.nl>
     
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